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-rw-r--r--BaseTools/Source/C/GenFw/Elf64Convert.c4864
1 files changed, 2432 insertions, 2432 deletions
diff --git a/BaseTools/Source/C/GenFw/Elf64Convert.c b/BaseTools/Source/C/GenFw/Elf64Convert.c
index 9d04fc612e..e9bdf1c891 100644
--- a/BaseTools/Source/C/GenFw/Elf64Convert.c
+++ b/BaseTools/Source/C/GenFw/Elf64Convert.c
@@ -1,2432 +1,2432 @@
-/** @file
-Elf64 convert solution
-
-Copyright (c) 2010 - 2021, Intel Corporation. All rights reserved.<BR>
-Portions copyright (c) 2013-2022, ARM Ltd. All rights reserved.<BR>
-Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
-Portions Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#ifndef __GNUC__
-#include <windows.h>
-#include <io.h>
-#endif
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <ctype.h>
-
-#include <Common/UefiBaseTypes.h>
-#include <IndustryStandard/PeImage.h>
-
-#include "PeCoffLib.h"
-#include "EfiUtilityMsgs.h"
-
-#include "GenFw.h"
-#include "ElfConvert.h"
-#include "Elf64Convert.h"
-
-STATIC
-VOID
-ScanSections64 (
- VOID
- );
-
-STATIC
-BOOLEAN
-WriteSections64 (
- SECTION_FILTER_TYPES FilterType
- );
-
-STATIC
-VOID
-WriteRelocations64 (
- VOID
- );
-
-STATIC
-VOID
-WriteDebug64 (
- VOID
- );
-
-STATIC
-VOID
-WriteExport64 (
- VOID
- );
-
-STATIC
-VOID
-SetImageSize64 (
- VOID
- );
-
-STATIC
-VOID
-CleanUp64 (
- VOID
- );
-
-//
-// Rename ELF32 structures to common names to help when porting to ELF64.
-//
-typedef Elf64_Shdr Elf_Shdr;
-typedef Elf64_Ehdr Elf_Ehdr;
-typedef Elf64_Rel Elf_Rel;
-typedef Elf64_Rela Elf_Rela;
-typedef Elf64_Sym Elf_Sym;
-typedef Elf64_Phdr Elf_Phdr;
-typedef Elf64_Dyn Elf_Dyn;
-#define ELFCLASS ELFCLASS64
-#define ELF_R_TYPE(r) ELF64_R_TYPE(r)
-#define ELF_R_SYM(r) ELF64_R_SYM(r)
-
-//
-// Well known ELF structures.
-//
-STATIC Elf_Ehdr *mEhdr;
-STATIC Elf_Shdr *mShdrBase;
-STATIC Elf_Phdr *mPhdrBase;
-
-//
-// GOT information
-//
-STATIC Elf_Shdr *mGOTShdr = NULL;
-STATIC UINT32 mGOTShindex = 0;
-STATIC UINT32 *mGOTCoffEntries = NULL;
-STATIC UINT32 mGOTMaxCoffEntries = 0;
-STATIC UINT32 mGOTNumCoffEntries = 0;
-
-//
-// Coff information
-//
-STATIC UINT32 mCoffAlignment = 0x20;
-
-//
-// PE section alignment.
-//
-STATIC UINT16 mCoffNbrSections = 4;
-
-//
-// ELF sections to offset in Coff file.
-//
-STATIC UINT32 *mCoffSectionsOffset = NULL;
-
-//
-// Offsets in COFF file
-//
-STATIC UINT32 mNtHdrOffset;
-STATIC UINT32 mTextOffset;
-STATIC UINT32 mDataOffset;
-STATIC UINT32 mHiiRsrcOffset;
-STATIC UINT32 mRelocOffset;
-STATIC UINT32 mDebugOffset;
-STATIC UINT32 mExportOffset;
-//
-// Used for RISC-V relocations.
-//
-STATIC UINT8 *mRiscVPass1Targ = NULL;
-STATIC Elf_Shdr *mRiscVPass1Sym = NULL;
-STATIC Elf64_Half mRiscVPass1SymSecIndex = 0;
-STATIC INT32 mRiscVPass1Offset;
-STATIC INT32 mRiscVPass1GotFixup;
-
-//
-// Used for Export section.
-//
-STATIC UINT32 mExportSize;
-STATIC UINT32 mExportRVA[PRM_MODULE_EXPORT_SYMBOL_NUM];
-STATIC UINT32 mExportSymNum;
-STATIC CHAR8 mExportSymName[PRM_MODULE_EXPORT_SYMBOL_NUM][PRM_HANDLER_NAME_MAXIMUM_LENGTH];
-
-//
-// Initialization Function
-//
-BOOLEAN
-InitializeElf64 (
- UINT8 *FileBuffer,
- ELF_FUNCTION_TABLE *ElfFunctions
- )
-{
- //
- // Initialize data pointer and structures.
- //
- VerboseMsg ("Set EHDR");
- mEhdr = (Elf_Ehdr*) FileBuffer;
-
- //
- // Check the ELF64 specific header information.
- //
- VerboseMsg ("Check ELF64 Header Information");
- if (mEhdr->e_ident[EI_CLASS] != ELFCLASS64) {
- Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS64");
- return FALSE;
- }
- if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) {
- Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB");
- return FALSE;
- }
- if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) {
- Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN");
- return FALSE;
- }
- if (!((mEhdr->e_machine == EM_X86_64) || (mEhdr->e_machine == EM_AARCH64) || (mEhdr->e_machine == EM_RISCV64) || (mEhdr->e_machine == EM_LOONGARCH))) {
- Warning (NULL, 0, 3000, "Unsupported", "ELF e_machine is not Elf64 machine.");
- }
- if (mEhdr->e_version != EV_CURRENT) {
- Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);
- return FALSE;
- }
-
- if (mExportFlag) {
- if ((mEhdr->e_machine != EM_X86_64) && (mEhdr->e_machine != EM_AARCH64)) {
- Error (NULL, 0, 3000, "Unsupported", "--prm option currently only supports X64 and AArch64 archs.");
- return FALSE;
- }
- }
-
- //
- // Update section header pointers
- //
- VerboseMsg ("Update Header Pointers");
- mShdrBase = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff);
- mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff);
-
- //
- // Create COFF Section offset buffer and zero.
- //
- VerboseMsg ("Create COFF Section Offset Buffer");
- mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));
- if (mCoffSectionsOffset == NULL) {
- Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
- return FALSE;
- }
- memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));
-
- //
- // Fill in function pointers.
- //
- VerboseMsg ("Fill in Function Pointers");
- ElfFunctions->ScanSections = ScanSections64;
- ElfFunctions->WriteSections = WriteSections64;
- ElfFunctions->WriteRelocations = WriteRelocations64;
- ElfFunctions->WriteDebug = WriteDebug64;
- ElfFunctions->SetImageSize = SetImageSize64;
- ElfFunctions->CleanUp = CleanUp64;
-
- if (mExportFlag) {
- mCoffNbrSections ++;
- ElfFunctions->WriteExport = WriteExport64;
- }
-
- return TRUE;
-}
-
-
-//
-// Header by Index functions
-//
-STATIC
-Elf_Shdr*
-GetShdrByIndex (
- UINT32 Num
- )
-{
- if (Num >= mEhdr->e_shnum) {
- Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);
- exit(EXIT_FAILURE);
- }
-
- return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);
-}
-
-STATIC
-UINT32
-CoffAlign (
- UINT32 Offset
- )
-{
- return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);
-}
-
-STATIC
-UINT32
-DebugRvaAlign (
- UINT32 Offset
- )
-{
- return (Offset + 3) & ~3;
-}
-
-//
-// filter functions
-//
-STATIC
-BOOLEAN
-IsTextShdr (
- Elf_Shdr *Shdr
- )
-{
- return (BOOLEAN) (((Shdr->sh_flags & (SHF_EXECINSTR | SHF_ALLOC)) == (SHF_EXECINSTR | SHF_ALLOC)) ||
- ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC));
-}
-
-STATIC
-BOOLEAN
-IsHiiRsrcShdr (
- Elf_Shdr *Shdr
- )
-{
- Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
-
- return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);
-}
-
-STATIC
-BOOLEAN
-IsSymbolShdr (
- Elf_Shdr *Shdr
- )
-{
- Elf_Shdr *Namehdr = GetShdrByIndex(mEhdr->e_shstrndx);
-
- return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namehdr->sh_offset + Shdr->sh_name, ELF_SYMBOL_SECTION_NAME) == 0);
-}
-
-STATIC
-BOOLEAN
-IsDataShdr (
- Elf_Shdr *Shdr
- )
-{
- if (IsHiiRsrcShdr(Shdr)) {
- return FALSE;
- }
- return (BOOLEAN) (Shdr->sh_flags & (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);
-}
-
-STATIC
-BOOLEAN
-IsStrtabShdr (
- Elf_Shdr *Shdr
- )
-{
- Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
-
- return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);
-}
-
-STATIC
-Elf_Shdr *
-FindStrtabShdr (
- VOID
- )
-{
- UINT32 i;
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (IsStrtabShdr(shdr)) {
- return shdr;
- }
- }
- return NULL;
-}
-
-STATIC
-const UINT8 *
-GetSymName (
- Elf_Sym *Sym
- )
-{
- Elf_Shdr *StrtabShdr;
- UINT8 *StrtabContents;
- BOOLEAN foundEnd;
- UINT32 i;
-
- if (Sym->st_name == 0) {
- return NULL;
- }
-
- StrtabShdr = FindStrtabShdr();
- if (StrtabShdr == NULL) {
- return NULL;
- }
-
- assert(Sym->st_name < StrtabShdr->sh_size);
-
- StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;
-
- foundEnd = FALSE;
- for (i= Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {
- foundEnd = (BOOLEAN)(StrtabContents[i] == 0);
- }
- assert(foundEnd);
-
- return StrtabContents + Sym->st_name;
-}
-
-//
-// Get Prm Handler number and name
-//
-STATIC
-VOID
-FindPrmHandler (
- UINT64 Offset
- )
-{
- PRM_MODULE_EXPORT_DESCRIPTOR_STRUCT_HEADER *PrmExport;
- PRM_HANDLER_EXPORT_DESCRIPTOR_STRUCT *PrmHandler;
- UINT32 HandlerNum;
-
- PrmExport = (PRM_MODULE_EXPORT_DESCRIPTOR_STRUCT_HEADER*)((UINT8*)mEhdr + Offset);
- PrmHandler = (PRM_HANDLER_EXPORT_DESCRIPTOR_STRUCT *)(PrmExport + 1);
-
- for (HandlerNum = 0; HandlerNum < PrmExport->NumberPrmHandlers; HandlerNum++) {
- strcpy(mExportSymName[mExportSymNum], PrmHandler->PrmHandlerName);
- mExportSymNum ++;
- PrmHandler += 1;
-
- //
- // Check if PRM handler number is larger than (PRM_MODULE_EXPORT_SYMBOL_NUM - 1)
- //
- if (mExportSymNum >= (PRM_MODULE_EXPORT_SYMBOL_NUM - 1)) {
- Error (NULL, 0, 3000, "Invalid", "FindPrmHandler: Number %u is too high.", mExportSymNum);
- exit(EXIT_FAILURE);
- }
- }
-}
-
-//
-// Find the ELF section hosting the GOT from an ELF Rva
-// of a single GOT entry. Normally, GOT is placed in
-// ELF .text section, so assume once we find in which
-// section the GOT is, all GOT entries are there, and
-// just verify this.
-//
-STATIC
-VOID
-FindElfGOTSectionFromGOTEntryElfRva (
- Elf64_Addr GOTEntryElfRva
- )
-{
- UINT32 i;
- if (mGOTShdr != NULL) {
- if (GOTEntryElfRva >= mGOTShdr->sh_addr &&
- GOTEntryElfRva < mGOTShdr->sh_addr + mGOTShdr->sh_size) {
- return;
- }
- Error (NULL, 0, 3000, "Unsupported", "FindElfGOTSectionFromGOTEntryElfRva: GOT entries found in multiple sections.");
- exit(EXIT_FAILURE);
- }
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (GOTEntryElfRva >= shdr->sh_addr &&
- GOTEntryElfRva < shdr->sh_addr + shdr->sh_size) {
- mGOTShdr = shdr;
- mGOTShindex = i;
- return;
- }
- }
- Error (NULL, 0, 3000, "Invalid", "FindElfGOTSectionFromGOTEntryElfRva: ElfRva 0x%016LX for GOT entry not found in any section.", GOTEntryElfRva);
- exit(EXIT_FAILURE);
-}
-
-//
-// Stores locations of GOT entries in COFF image.
-// Returns TRUE if GOT entry is new.
-// Simple implementation as number of GOT
-// entries is expected to be low.
-//
-
-STATIC
-BOOLEAN
-AccumulateCoffGOTEntries (
- UINT32 GOTCoffEntry
- )
-{
- UINT32 i;
- if (mGOTCoffEntries != NULL) {
- for (i = 0; i < mGOTNumCoffEntries; i++) {
- if (mGOTCoffEntries[i] == GOTCoffEntry) {
- return FALSE;
- }
- }
- }
- if (mGOTCoffEntries == NULL) {
- mGOTCoffEntries = (UINT32*)malloc(5 * sizeof *mGOTCoffEntries);
- if (mGOTCoffEntries == NULL) {
- Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
- }
- assert (mGOTCoffEntries != NULL);
- mGOTMaxCoffEntries = 5;
- mGOTNumCoffEntries = 0;
- } else if (mGOTNumCoffEntries == mGOTMaxCoffEntries) {
- mGOTCoffEntries = (UINT32*)realloc(mGOTCoffEntries, 2 * mGOTMaxCoffEntries * sizeof *mGOTCoffEntries);
- if (mGOTCoffEntries == NULL) {
- Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
- }
- assert (mGOTCoffEntries != NULL);
- mGOTMaxCoffEntries += mGOTMaxCoffEntries;
- }
- mGOTCoffEntries[mGOTNumCoffEntries++] = GOTCoffEntry;
- return TRUE;
-}
-
-//
-// 32-bit Unsigned integer comparator for qsort.
-//
-STATIC
-int
-UINT32Comparator (
- const void* lhs,
- const void* rhs
- )
-{
- if (*(const UINT32*)lhs < *(const UINT32*)rhs) {
- return -1;
- }
- return *(const UINT32*)lhs > *(const UINT32*)rhs;
-}
-
-//
-// Emit accumulated Coff GOT entry relocations into
-// Coff image. This function performs its job
-// once and then releases the entry list, so
-// it can safely be called multiple times.
-//
-STATIC
-VOID
-EmitGOTRelocations (
- VOID
- )
-{
- UINT32 i;
- if (mGOTCoffEntries == NULL) {
- return;
- }
- //
- // Emit Coff relocations with Rvas ordered.
- //
- qsort(
- mGOTCoffEntries,
- mGOTNumCoffEntries,
- sizeof *mGOTCoffEntries,
- UINT32Comparator);
- for (i = 0; i < mGOTNumCoffEntries; i++) {
- VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X", mGOTCoffEntries[i]);
- CoffAddFixup(
- mGOTCoffEntries[i],
- EFI_IMAGE_REL_BASED_DIR64);
- }
- free(mGOTCoffEntries);
- mGOTCoffEntries = NULL;
- mGOTMaxCoffEntries = 0;
- mGOTNumCoffEntries = 0;
-}
-//
-// RISC-V 64 specific Elf WriteSection function.
-//
-STATIC
-VOID
-WriteSectionRiscV64 (
- Elf_Rela *Rel,
- UINT8 *Targ,
- Elf_Shdr *SymShdr,
- Elf_Sym *Sym
- )
-{
- UINT32 Value;
- UINT32 Value2;
- Elf64_Addr GOTEntryRva;
-
- switch (ELF_R_TYPE(Rel->r_info)) {
- case R_RISCV_NONE:
- break;
-
- case R_RISCV_32:
- *(UINT64 *)Targ = Sym->st_value + Rel->r_addend;
- break;
-
- case R_RISCV_64:
- *(UINT64 *)Targ = Sym->st_value + Rel->r_addend;
- break;
-
- case R_RISCV_HI20:
- mRiscVPass1Targ = Targ;
- mRiscVPass1Sym = SymShdr;
- mRiscVPass1SymSecIndex = Sym->st_shndx;
- break;
-
- case R_RISCV_LO12_I:
- if (mRiscVPass1Sym == SymShdr && mRiscVPass1Targ != NULL && mRiscVPass1SymSecIndex == Sym->st_shndx && mRiscVPass1SymSecIndex != 0) {
- Value = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20) << 12);
- Value2 = (UINT32)(RV_X(*(UINT32 *)Targ, 20, 12));
- if (Value2 & (RISCV_IMM_REACH/2)) {
- Value2 |= ~(RISCV_IMM_REACH-1);
- }
- Value += Value2;
- Value = Value - (UINT32)SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
- Value2 = RISCV_CONST_HIGH_PART (Value);
- *(UINT32 *)mRiscVPass1Targ = (RV_X (Value2, 12, 20) << 12) | \
- (RV_X (*(UINT32 *)mRiscVPass1Targ, 0, 12));
- *(UINT32 *)Targ = (RV_X (Value, 0, 12) << 20) | \
- (RV_X (*(UINT32 *)Targ, 0, 20));
- }
- mRiscVPass1Sym = NULL;
- mRiscVPass1Targ = NULL;
- mRiscVPass1SymSecIndex = 0;
- break;
-
- case R_RISCV_LO12_S:
- if (mRiscVPass1Sym == SymShdr && mRiscVPass1Targ != NULL && mRiscVPass1SymSecIndex == Sym->st_shndx && mRiscVPass1SymSecIndex != 0) {
- Value = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20) << 12);
- Value2 = (UINT32)(RV_X(*(UINT32 *)Targ, 7, 5) | (RV_X(*(UINT32 *)Targ, 25, 7) << 5));
- if (Value2 & (RISCV_IMM_REACH/2)) {
- Value2 |= ~(RISCV_IMM_REACH-1);
- }
- Value += Value2;
- Value = Value - (UINT32)SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
- Value2 = RISCV_CONST_HIGH_PART (Value);
- *(UINT32 *)mRiscVPass1Targ = (RV_X (Value2, 12, 20) << 12) | \
- (RV_X (*(UINT32 *)mRiscVPass1Targ, 0, 12));
- Value2 = *(UINT32 *)Targ & 0x01fff07f;
- Value &= RISCV_IMM_REACH - 1;
- *(UINT32 *)Targ = Value2 | (UINT32)(((RV_X(Value, 0, 5) << 7) | (RV_X(Value, 5, 7) << 25)));
- }
- mRiscVPass1Sym = NULL;
- mRiscVPass1Targ = NULL;
- mRiscVPass1SymSecIndex = 0;
- break;
-
- case R_RISCV_GOT_HI20:
- GOTEntryRva = (Sym->st_value - Rel->r_offset);
- mRiscVPass1Offset = RV_X(GOTEntryRva, 0, 12);
- Value = (UINT32)RV_X(GOTEntryRva, 12, 20);
- *(UINT32 *)Targ = (Value << 12) | (RV_X(*(UINT32*)Targ, 0, 12));
-
- mRiscVPass1Targ = Targ;
- mRiscVPass1Sym = SymShdr;
- mRiscVPass1SymSecIndex = Sym->st_shndx;
- mRiscVPass1GotFixup = 1;
- break;
-
- case R_RISCV_PCREL_HI20:
- mRiscVPass1Targ = Targ;
- mRiscVPass1Sym = SymShdr;
- mRiscVPass1SymSecIndex = Sym->st_shndx;
-
- Value = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20));
- break;
-
- case R_RISCV_PCREL_LO12_S:
- if (mRiscVPass1Targ != NULL && mRiscVPass1Sym != NULL && mRiscVPass1SymSecIndex != 0) {
- int i;
- Value2 = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20));
-
- Value = ((UINT32)(RV_X(*(UINT32 *)Targ, 25, 7)) << 5);
- Value = (Value | (UINT32)(RV_X(*(UINT32 *)Targ, 7, 5)));
-
- if(Value & (RISCV_IMM_REACH/2)) {
- Value |= ~(RISCV_IMM_REACH-1);
- }
- Value = Value - (UINT32)mRiscVPass1Sym->sh_addr + mCoffSectionsOffset[mRiscVPass1SymSecIndex];
-
- if(-2048 > (INT32)Value) {
- i = (((INT32)Value * -1) / 4096);
- Value2 -= i;
- Value += 4096 * i;
- if(-2048 > (INT32)Value) {
- Value2 -= 1;
- Value += 4096;
- }
- }
- else if( 2047 < (INT32)Value) {
- i = (Value / 4096);
- Value2 += i;
- Value -= 4096 * i;
- if(2047 < (INT32)Value) {
- Value2 += 1;
- Value -= 4096;
- }
- }
-
- // Update the IMM of SD instruction
- //
- // |31 25|24 20|19 15|14 12 |11 7|6 0|
- // |-------------------------------------------|-------|
- // |imm[11:5] | rs2 | rs1 | funct3 |imm[4:0] | opcode|
- // ---------------------------------------------------
-
- // First Zero out current IMM
- *(UINT32 *)Targ &= ~0xfe000f80;
-
- // Update with new IMM
- *(UINT32 *)Targ |= (RV_X(Value, 5, 7) << 25);
- *(UINT32 *)Targ |= (RV_X(Value, 0, 5) << 7);
-
- // Update previous instruction
- *(UINT32 *)mRiscVPass1Targ = (RV_X(Value2, 0, 20)<<12) | (RV_X(*(UINT32 *)mRiscVPass1Targ, 0, 12));
- }
- mRiscVPass1Sym = NULL;
- mRiscVPass1Targ = NULL;
- mRiscVPass1SymSecIndex = 0;
- break;
-
- case R_RISCV_PCREL_LO12_I:
- if (mRiscVPass1Targ != NULL && mRiscVPass1Sym != NULL && mRiscVPass1SymSecIndex != 0) {
- int i;
- Value2 = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20));
-
- if(mRiscVPass1GotFixup) {
- Value = (UINT32)(mRiscVPass1Offset);
- } else {
- Value = (UINT32)(RV_X(*(UINT32 *)Targ, 20, 12));
- if(Value & (RISCV_IMM_REACH/2)) {
- Value |= ~(RISCV_IMM_REACH-1);
- }
- }
- Value = Value - (UINT32)mRiscVPass1Sym->sh_addr + mCoffSectionsOffset[mRiscVPass1SymSecIndex];
-
- if(-2048 > (INT32)Value) {
- i = (((INT32)Value * -1) / 4096);
- Value2 -= i;
- Value += 4096 * i;
- if(-2048 > (INT32)Value) {
- Value2 -= 1;
- Value += 4096;
- }
- }
- else if( 2047 < (INT32)Value) {
- i = (Value / 4096);
- Value2 += i;
- Value -= 4096 * i;
- if(2047 < (INT32)Value) {
- Value2 += 1;
- Value -= 4096;
- }
- }
-
- if(mRiscVPass1GotFixup) {
- *(UINT32 *)Targ = (RV_X((UINT32)Value, 0, 12) << 20)
- | (RV_X(*(UINT32*)Targ, 0, 20));
- // Convert LD instruction to ADDI
- //
- // |31 20|19 15|14 12|11 7|6 0|
- // |-----------------------------------------|
- // |imm[11:0] | rs1 | 011 | rd | 0000011 | LD
- // -----------------------------------------
-
- // |-----------------------------------------|
- // |imm[11:0] | rs1 | 000 | rd | 0010011 | ADDI
- // -----------------------------------------
-
- // To convert, let's first reset bits 12-14 and 0-6 using ~0x707f
- // Then modify the opcode to ADDI (0010011)
- // All other fields will remain same.
-
- *(UINT32 *)Targ = ((*(UINT32 *)Targ & ~0x707f) | 0x13);
- } else {
- *(UINT32 *)Targ = (RV_X(Value, 0, 12) << 20) | (RV_X(*(UINT32*)Targ, 0, 20));
- }
- *(UINT32 *)mRiscVPass1Targ = (RV_X(Value2, 0, 20)<<12) | (RV_X(*(UINT32 *)mRiscVPass1Targ, 0, 12));
- }
- mRiscVPass1Sym = NULL;
- mRiscVPass1Targ = NULL;
- mRiscVPass1SymSecIndex = 0;
- mRiscVPass1Offset = 0;
- mRiscVPass1GotFixup = 0;
- break;
-
- case R_RISCV_ADD64:
- case R_RISCV_SUB64:
- case R_RISCV_ADD32:
- case R_RISCV_SUB32:
- case R_RISCV_BRANCH:
- case R_RISCV_JAL:
- case R_RISCV_GPREL_I:
- case R_RISCV_GPREL_S:
- case R_RISCV_CALL:
- case R_RISCV_CALL_PLT:
- case R_RISCV_RVC_BRANCH:
- case R_RISCV_RVC_JUMP:
- case R_RISCV_RELAX:
- case R_RISCV_SUB6:
- case R_RISCV_SET6:
- case R_RISCV_SET8:
- case R_RISCV_SET16:
- case R_RISCV_SET32:
- break;
-
- default:
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_RISCV64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
- }
-}
-
-STATIC UINT16 mDllCharacteristicsEx;
-
-STATIC
-VOID
-ParseNoteSection (
- CONST Elf_Shdr *Shdr
- )
-{
- CONST Elf_Note *Note;
- CONST UINT32 *Prop;
- UINT32 Prop0;
- UINT32 Prop2;
-
- Note = (Elf_Note *)((UINT8 *)mEhdr + Shdr->sh_offset);
-
- if ((Note->n_type == NT_GNU_PROPERTY_TYPE_0) &&
- (Note->n_namesz == sizeof ("GNU")) &&
- (strcmp ((CHAR8 *)(Note + 1), "GNU") == 0) &&
- (Note->n_descsz > sizeof (UINT32[2]))) {
- Prop = (UINT32 *)((UINT8 *)(Note + 1) + sizeof("GNU"));
-
- switch (mEhdr->e_machine) {
- case EM_AARCH64:
- Prop0 = GNU_PROPERTY_AARCH64_FEATURE_1_AND;
- Prop2 = GNU_PROPERTY_AARCH64_FEATURE_1_BTI;
- break;
-
- case EM_X86_64:
- Prop0 = GNU_PROPERTY_X86_FEATURE_1_AND;
- Prop2 = GNU_PROPERTY_X86_FEATURE_1_IBT;
- break;
-
- default:
- return;
- }
- if ((Prop[0] == Prop0) &&
- (Prop[1] >= sizeof (UINT32)) &&
- ((Prop[2] & Prop2) != 0)) {
- mDllCharacteristicsEx |= EFI_IMAGE_DLLCHARACTERISTICS_EX_FORWARD_CFI_COMPAT;
- }
- }
-}
-
-//
-// Elf functions interface implementation
-//
-
-STATIC
-VOID
-ScanSections64 (
- VOID
- )
-{
- UINT32 i;
- EFI_IMAGE_DOS_HEADER *DosHdr;
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
- UINT32 CoffEntry;
- UINT32 SectionCount;
- BOOLEAN FoundSection;
- UINT32 Offset;
-
- CoffEntry = 0;
- mCoffOffset = 0;
-
- //
- // Coff file start with a DOS header.
- //
- mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;
- mNtHdrOffset = mCoffOffset;
- switch (mEhdr->e_machine) {
- case EM_X86_64:
- case EM_AARCH64:
- case EM_RISCV64:
- case EM_LOONGARCH:
- mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);
- break;
- default:
- VerboseMsg ("%s unknown e_machine type %hu. Assume X64", mInImageName, mEhdr->e_machine);
- mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);
- break;
- }
-
- mTableOffset = mCoffOffset;
- mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);
-
- //
- // Set mCoffAlignment to the maximum alignment of the input sections
- // we care about
- //
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (shdr->sh_addralign <= mCoffAlignment) {
- continue;
- }
- if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {
- mCoffAlignment = (UINT32)shdr->sh_addralign;
- }
- }
-
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (shdr->sh_type == SHT_NOTE) {
- ParseNoteSection (shdr);
- }
- }
-
- //
- // Check if mCoffAlignment is larger than MAX_COFF_ALIGNMENT
- //
- if (mCoffAlignment > MAX_COFF_ALIGNMENT) {
- Error (NULL, 0, 3000, "Invalid", "Section alignment is larger than MAX_COFF_ALIGNMENT.");
- assert (FALSE);
- }
-
-
- //
- // Move the PE/COFF header right before the first section. This will help us
- // save space when converting to TE.
- //
- if (mCoffAlignment > mCoffOffset) {
- mNtHdrOffset += mCoffAlignment - mCoffOffset;
- mTableOffset += mCoffAlignment - mCoffOffset;
- mCoffOffset = mCoffAlignment;
- }
-
- //
- // First text sections.
- //
- mCoffOffset = CoffAlign(mCoffOffset);
- mTextOffset = mCoffOffset;
- FoundSection = FALSE;
- SectionCount = 0;
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (IsTextShdr(shdr)) {
- if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
- // the alignment field is valid
- if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
- // if the section address is aligned we must align PE/COFF
- mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));
- } else {
- Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
- }
- }
-
- /* Relocate entry. */
- if ((mEhdr->e_entry >= shdr->sh_addr) &&
- (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {
- CoffEntry = (UINT32) (mCoffOffset + mEhdr->e_entry - shdr->sh_addr);
- }
-
- //
- // Set mTextOffset with the offset of the first '.text' section
- //
- if (!FoundSection) {
- mTextOffset = mCoffOffset;
- FoundSection = TRUE;
- }
-
- mCoffSectionsOffset[i] = mCoffOffset;
- mCoffOffset += (UINT32) shdr->sh_size;
- SectionCount ++;
- }
- }
-
- if (!FoundSection && mOutImageType != FW_ACPI_IMAGE) {
- Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");
- assert (FALSE);
- }
-
- mDebugOffset = DebugRvaAlign(mCoffOffset);
- mCoffOffset = CoffAlign(mCoffOffset);
-
- if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
- Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);
- }
-
- //
- // Then data sections.
- //
- mDataOffset = mCoffOffset;
- FoundSection = FALSE;
- SectionCount = 0;
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (IsDataShdr(shdr)) {
- if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
- // the alignment field is valid
- if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
- // if the section address is aligned we must align PE/COFF
- mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));
- } else {
- Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
- }
- }
-
- //
- // Set mDataOffset with the offset of the first '.data' section
- //
- if (!FoundSection) {
- mDataOffset = mCoffOffset;
- FoundSection = TRUE;
- }
- mCoffSectionsOffset[i] = mCoffOffset;
- mCoffOffset += (UINT32) shdr->sh_size;
- SectionCount ++;
- }
- }
-
- //
- // Make room for .debug data in .data (or .text if .data is empty) instead of
- // putting it in a section of its own. This is explicitly allowed by the
- // PE/COFF spec, and prevents bloat in the binary when using large values for
- // section alignment.
- //
- if (SectionCount > 0) {
- mDebugOffset = DebugRvaAlign(mCoffOffset);
- }
- mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +
- sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +
- strlen(mInImageName) + 1;
-
- //
- // Add more space in the .debug data region for the DllCharacteristicsEx
- // field.
- //
- if (mDllCharacteristicsEx != 0) {
- mCoffOffset = DebugRvaAlign(mCoffOffset) +
- sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +
- sizeof (EFI_IMAGE_DEBUG_EX_DLLCHARACTERISTICS_ENTRY);
- }
-
- mCoffOffset = CoffAlign(mCoffOffset);
- if (SectionCount == 0) {
- mDataOffset = mCoffOffset;
- }
-
- if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
- Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);
- }
-
- //
- // The Symbol sections.
- //
- if (mExportFlag) {
- UINT32 SymIndex;
- Elf_Sym *Sym;
- UINT64 SymNum;
- const UINT8 *SymName;
-
- mExportOffset = mCoffOffset;
- mExportSize = sizeof(EFI_IMAGE_EXPORT_DIRECTORY) + strlen(mInImageName) + 1;
-
- for (i = 0; i < mEhdr->e_shnum; i++) {
-
- //
- // Determine if this is a symbol section.
- //
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (!IsSymbolShdr(shdr)) {
- continue;
- }
-
- UINT8 *Symtab = (UINT8*)mEhdr + shdr->sh_offset;
- SymNum = (shdr->sh_size) / (shdr->sh_entsize);
-
- //
- // First Get PrmModuleExportDescriptor
- //
- for (SymIndex = 0; SymIndex < SymNum; SymIndex++) {
- Sym = (Elf_Sym *)(Symtab + SymIndex * shdr->sh_entsize);
- SymName = GetSymName(Sym);
- if (SymName == NULL) {
- continue;
- }
-
- if (strcmp((CHAR8*)SymName, PRM_MODULE_EXPORT_DESCRIPTOR_NAME) == 0) {
- //
- // Find PrmHandler Number and Name
- //
- FindPrmHandler(Sym->st_value);
-
- strcpy(mExportSymName[mExportSymNum], (CHAR8*)SymName);
- mExportRVA[mExportSymNum] = (UINT32)(Sym->st_value);
- mExportSize += 2 * EFI_IMAGE_EXPORT_ADDR_SIZE + EFI_IMAGE_EXPORT_ORDINAL_SIZE + strlen((CHAR8 *)SymName) + 1;
- mExportSymNum ++;
- break;
- }
- }
-
- //
- // Second Get PrmHandler
- //
- for (SymIndex = 0; SymIndex < SymNum; SymIndex++) {
- UINT32 ExpIndex;
- Sym = (Elf_Sym *)(Symtab + SymIndex * shdr->sh_entsize);
- SymName = GetSymName(Sym);
- if (SymName == NULL) {
- continue;
- }
-
- for (ExpIndex = 0; ExpIndex < (mExportSymNum -1); ExpIndex++) {
- if (strcmp((CHAR8*)SymName, mExportSymName[ExpIndex]) != 0) {
- continue;
- }
- mExportRVA[ExpIndex] = (UINT32)(Sym->st_value);
- mExportSize += 2 * EFI_IMAGE_EXPORT_ADDR_SIZE + EFI_IMAGE_EXPORT_ORDINAL_SIZE + strlen((CHAR8 *)SymName) + 1;
- }
- }
-
- break;
- }
-
- mCoffOffset += mExportSize;
- mCoffOffset = CoffAlign(mCoffOffset);
- }
-
- //
- // The HII resource sections.
- //
- mHiiRsrcOffset = mCoffOffset;
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (IsHiiRsrcShdr(shdr)) {
- if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
- // the alignment field is valid
- if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
- // if the section address is aligned we must align PE/COFF
- mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));
- } else {
- Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
- }
- }
- if (shdr->sh_size != 0) {
- mHiiRsrcOffset = mCoffOffset;
- mCoffSectionsOffset[i] = mCoffOffset;
- mCoffOffset += (UINT32) shdr->sh_size;
- mCoffOffset = CoffAlign(mCoffOffset);
- SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);
- }
- break;
- }
- }
-
- mRelocOffset = mCoffOffset;
-
- //
- // Allocate base Coff file. Will be expanded later for relocations.
- //
- mCoffFile = (UINT8 *)malloc(mCoffOffset);
- if (mCoffFile == NULL) {
- Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
- }
- assert (mCoffFile != NULL);
- memset(mCoffFile, 0, mCoffOffset);
-
- //
- // Fill headers.
- //
- DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;
- DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;
- DosHdr->e_lfanew = mNtHdrOffset;
-
- NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);
-
- NtHdr->Pe32Plus.Signature = EFI_IMAGE_NT_SIGNATURE;
-
- switch (mEhdr->e_machine) {
- case EM_X86_64:
- NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_X64;
- NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
- break;
- case EM_AARCH64:
- NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_ARM64;
- NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
- break;
- case EM_RISCV64:
- NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_RISCV64;
- NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
- break;
- case EM_LOONGARCH:
- NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_LOONGARCH64;
- NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
- break;
-
- default:
- VerboseMsg ("%u unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine);
- NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_X64;
- NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
- }
-
- NtHdr->Pe32Plus.FileHeader.NumberOfSections = mCoffNbrSections;
- NtHdr->Pe32Plus.FileHeader.TimeDateStamp = (UINT32) time(NULL);
- mImageTimeStamp = NtHdr->Pe32Plus.FileHeader.TimeDateStamp;
- NtHdr->Pe32Plus.FileHeader.PointerToSymbolTable = 0;
- NtHdr->Pe32Plus.FileHeader.NumberOfSymbols = 0;
- NtHdr->Pe32Plus.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32Plus.OptionalHeader);
- NtHdr->Pe32Plus.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE
- | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED
- | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED
- | EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE;
-
- NtHdr->Pe32Plus.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;
- NtHdr->Pe32Plus.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;
- NtHdr->Pe32Plus.OptionalHeader.SizeOfUninitializedData = 0;
- NtHdr->Pe32Plus.OptionalHeader.AddressOfEntryPoint = CoffEntry;
-
- NtHdr->Pe32Plus.OptionalHeader.BaseOfCode = mTextOffset;
-
- NtHdr->Pe32Plus.OptionalHeader.ImageBase = 0;
- NtHdr->Pe32Plus.OptionalHeader.SectionAlignment = mCoffAlignment;
- NtHdr->Pe32Plus.OptionalHeader.FileAlignment = mCoffAlignment;
- NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = 0;
-
- NtHdr->Pe32Plus.OptionalHeader.SizeOfHeaders = mTextOffset;
- NtHdr->Pe32Plus.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;
-
- //
- // Section headers.
- //
- if ((mDataOffset - mTextOffset) > 0) {
- CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,
- EFI_IMAGE_SCN_CNT_CODE
- | EFI_IMAGE_SCN_MEM_EXECUTE
- | EFI_IMAGE_SCN_MEM_READ);
- } else {
- // Don't make a section of size 0.
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- }
-
- //
- // If found symbol, add edata section between data and rsrc section
- //
- if(mExportFlag) {
- Offset = mExportOffset;
- } else {
- Offset = mHiiRsrcOffset;
- }
-
- if ((mHiiRsrcOffset - mDataOffset) > 0) {
- CreateSectionHeader (".data", mDataOffset, Offset - mDataOffset,
- EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
- | EFI_IMAGE_SCN_MEM_WRITE
- | EFI_IMAGE_SCN_MEM_READ);
- } else {
- // Don't make a section of size 0.
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- }
-
- if(mExportFlag) {
- if ((mHiiRsrcOffset - mExportOffset) > 0) {
- CreateSectionHeader (".edata", mExportOffset, mHiiRsrcOffset - mExportOffset,
- EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
- | EFI_IMAGE_SCN_MEM_READ);
- NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_EXPORT].Size = mHiiRsrcOffset - mExportOffset;
- NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress = mExportOffset;
-
- } else {
- // Don't make a section of size 0.
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- }
- }
-
- if ((mRelocOffset - mHiiRsrcOffset) > 0) {
- CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,
- EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
- | EFI_IMAGE_SCN_MEM_READ);
-
- NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;
- NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;
- } else {
- // Don't make a section of size 0.
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- }
-
-}
-
-STATIC
-BOOLEAN
-WriteSections64 (
- SECTION_FILTER_TYPES FilterType
- )
-{
- UINT32 Idx;
- Elf_Shdr *SecShdr;
- UINT32 SecOffset;
- BOOLEAN (*Filter)(Elf_Shdr *);
- Elf64_Addr GOTEntryRva;
-
- //
- // Initialize filter pointer
- //
- switch (FilterType) {
- case SECTION_TEXT:
- Filter = IsTextShdr;
- break;
- case SECTION_HII:
- Filter = IsHiiRsrcShdr;
- break;
- case SECTION_DATA:
- Filter = IsDataShdr;
- break;
- default:
- return FALSE;
- }
-
- //
- // First: copy sections.
- //
- for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
- Elf_Shdr *Shdr = GetShdrByIndex(Idx);
- if ((*Filter)(Shdr)) {
- switch (Shdr->sh_type) {
- case SHT_PROGBITS:
- /* Copy. */
- if (Shdr->sh_offset + Shdr->sh_size > mFileBufferSize) {
- return FALSE;
- }
- memcpy(mCoffFile + mCoffSectionsOffset[Idx],
- (UINT8*)mEhdr + Shdr->sh_offset,
- (size_t) Shdr->sh_size);
- break;
-
- case SHT_NOBITS:
- memset(mCoffFile + mCoffSectionsOffset[Idx], 0, (size_t) Shdr->sh_size);
- break;
-
- default:
- //
- // Ignore for unknown section type.
- //
- VerboseMsg ("%s unknown section type %x. We ignore this unknown section type.", mInImageName, (unsigned)Shdr->sh_type);
- break;
- }
- }
- }
-
- //
- // Second: apply relocations.
- //
- VerboseMsg ("Applying Relocations...");
- for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
- //
- // Determine if this is a relocation section.
- //
- Elf_Shdr *RelShdr = GetShdrByIndex(Idx);
- if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
- continue;
- }
-
- //
- // If this is a ET_DYN (PIE) executable, we will encounter a dynamic SHT_RELA
- // section that applies to the entire binary, and which will have its section
- // index set to #0 (which is a NULL section with the SHF_ALLOC bit cleared).
- //
- // In the absence of GOT based relocations,
- // this RELA section will contain redundant R_xxx_RELATIVE relocations, one
- // for every R_xxx_xx64 relocation appearing in the per-section RELA sections.
- // (i.e., .rela.text and .rela.data)
- //
- if (RelShdr->sh_info == 0) {
- continue;
- }
-
- //
- // Relocation section found. Now extract section information that the relocations
- // apply to in the ELF data and the new COFF data.
- //
- SecShdr = GetShdrByIndex(RelShdr->sh_info);
- SecOffset = mCoffSectionsOffset[RelShdr->sh_info];
-
- //
- // Only process relocations for the current filter type.
- //
- if (RelShdr->sh_type == SHT_RELA && (*Filter)(SecShdr)) {
- UINT64 RelIdx;
-
- //
- // Determine the symbol table referenced by the relocation data.
- //
- Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);
- UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;
-
- //
- // Process all relocation entries for this section.
- //
- for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += (UINT32) RelShdr->sh_entsize) {
-
- //
- // Set pointer to relocation entry
- //
- Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
-
- //
- // Set pointer to symbol table entry associated with the relocation entry.
- //
- Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);
-
- Elf_Shdr *SymShdr;
- UINT8 *Targ;
-
- //
- // The _GLOBAL_OFFSET_TABLE_ symbol is not actually an absolute symbol,
- // but carries the SHN_ABS section index for historical reasons.
- // It must be accompanied by a R_*_GOT_* type relocation on a
- // subsequent instruction, which we handle below, specifically to avoid
- // the GOT indirection, and to refer to the symbol directly. This means
- // we can simply disregard direct references to the GOT symbol itself,
- // as the resulting value will never be used.
- //
- if (Sym->st_shndx == SHN_ABS) {
- const UINT8 *SymName = GetSymName (Sym);
- if (strcmp ((CHAR8 *)SymName, "_GLOBAL_OFFSET_TABLE_") == 0) {
- continue;
- }
- }
-
- //
- // Check section header index found in symbol table and get the section
- // header location.
- //
- if (Sym->st_shndx == SHN_UNDEF
- || Sym->st_shndx >= mEhdr->e_shnum) {
- const UINT8 *SymName = GetSymName(Sym);
- if (SymName == NULL) {
- SymName = (const UINT8 *)"<unknown>";
- }
-
- //
- // Skip error on EM_RISCV64 and EM_LOONGARCH because no symbol name is built
- // from RISC-V and LoongArch toolchain.
- //
- if ((mEhdr->e_machine != EM_RISCV64) && (mEhdr->e_machine != EM_LOONGARCH)) {
- Error (NULL, 0, 3000, "Invalid",
- "%s: Bad definition for symbol '%s'@%#llx or unsupported symbol type. "
- "For example, absolute and undefined symbols are not supported.",
- mInImageName, SymName, Sym->st_value);
-
- exit(EXIT_FAILURE);
- }
- continue;
- }
- SymShdr = GetShdrByIndex(Sym->st_shndx);
-
- //
- // Convert the relocation data to a pointer into the coff file.
- //
- // Note:
- // r_offset is the virtual address of the storage unit to be relocated.
- // sh_addr is the virtual address for the base of the section.
- //
- // r_offset in a memory address.
- // Convert it to a pointer in the coff file.
- //
- Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);
-
- //
- // Determine how to handle each relocation type based on the machine type.
- //
- if (mEhdr->e_machine == EM_X86_64) {
- switch (ELF_R_TYPE(Rel->r_info)) {
- case R_X86_64_NONE:
- break;
- case R_X86_64_64:
- //
- // Absolute relocation.
- //
- VerboseMsg ("R_X86_64_64");
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX",
- (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
- *(UINT64 *)Targ);
- *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
- VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ);
- break;
- case R_X86_64_32:
- VerboseMsg ("R_X86_64_32");
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
- (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
- *(UINT32 *)Targ);
- *(UINT32 *)Targ = (UINT32)((UINT64)(*(UINT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
- VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ);
- break;
- case R_X86_64_32S:
- VerboseMsg ("R_X86_64_32S");
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
- (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
- *(UINT32 *)Targ);
- *(INT32 *)Targ = (INT32)((INT64)(*(INT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
- VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ);
- break;
-
- case R_X86_64_PLT32:
- //
- // Treat R_X86_64_PLT32 relocations as R_X86_64_PC32: this is
- // possible since we know all code symbol references resolve to
- // definitions in the same module (UEFI has no shared libraries),
- // and so there is never a reason to jump via a PLT entry,
- // allowing us to resolve the reference using the symbol directly.
- //
- VerboseMsg ("Treating R_X86_64_PLT32 as R_X86_64_PC32 ...");
- /* fall through */
- case R_X86_64_PC32:
- //
- // Relative relocation: Symbol - Ip + Addend
- //
- VerboseMsg ("R_X86_64_PC32");
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
- (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
- *(UINT32 *)Targ);
- *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ
- + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)
- - (SecOffset - SecShdr->sh_addr));
- VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ);
- break;
- case R_X86_64_GOTPCREL:
- case R_X86_64_GOTPCRELX:
- case R_X86_64_REX_GOTPCRELX:
- VerboseMsg ("R_X86_64_GOTPCREL family");
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
- (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
- *(UINT32 *)Targ);
- GOTEntryRva = Rel->r_offset - Rel->r_addend + *(INT32 *)Targ;
- FindElfGOTSectionFromGOTEntryElfRva(GOTEntryRva);
- *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ
- + (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr)
- - (SecOffset - SecShdr->sh_addr));
- VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ);
- GOTEntryRva += (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr); // ELF Rva -> COFF Rva
- if (AccumulateCoffGOTEntries((UINT32)GOTEntryRva)) {
- //
- // Relocate GOT entry if it's the first time we run into it
- //
- Targ = mCoffFile + GOTEntryRva;
- //
- // Limitation: The following three statements assume memory
- // at *Targ is valid because the section containing the GOT
- // has already been copied from the ELF image to the Coff image.
- // This pre-condition presently holds because the GOT is placed
- // in section .text, and the ELF text sections are all copied
- // prior to reaching this point.
- // If the pre-condition is violated in the future, this fixup
- // either needs to be deferred after the GOT section is copied
- // to the Coff image, or the fixup should be performed on the
- // source Elf image instead of the destination Coff image.
- //
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX",
- (UINT32)GOTEntryRva,
- *(UINT64 *)Targ);
- *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
- VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ);
- }
- break;
- default:
- Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
- }
- } else if (mEhdr->e_machine == EM_AARCH64) {
-
- switch (ELF_R_TYPE(Rel->r_info)) {
- INT64 Offset;
-
- case R_AARCH64_LD64_GOTOFF_LO15:
- case R_AARCH64_LD64_GOTPAGE_LO15:
- //
- // Convert into an ADR instruction that refers to the symbol directly.
- //
- Offset = Sym->st_value - Rel->r_offset;
-
- *(UINT32 *)Targ &= 0x1000001f;
- *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);
-
- if (Offset < -0x100000 || Offset > 0xfffff) {
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s failed to relax GOT based symbol reference - image is too big (>1 MiB).",
- mInImageName);
- break;
- }
- break;
-
- case R_AARCH64_LD64_GOT_LO12_NC:
- //
- // Convert into an ADD instruction - see R_AARCH64_ADR_GOT_PAGE below.
- //
- *(UINT32 *)Targ &= 0x3ff;
- *(UINT32 *)Targ |= 0x91000000 | ((Sym->st_value & 0xfff) << 10);
- break;
-
- case R_AARCH64_ADR_GOT_PAGE:
- //
- // This relocation points to the GOT entry that contains the absolute
- // address of the symbol we are referring to. Since EDK2 only uses
- // fully linked binaries, we can avoid the indirection, and simply
- // refer to the symbol directly. This implies having to patch the
- // subsequent LDR instruction (covered by a R_AARCH64_LD64_GOT_LO12_NC
- // relocation) into an ADD instruction - this is handled above.
- //
- // In order to handle Cortex-A53 erratum #843419, the GCC toolchain
- // may convert an ADRP instruction at the end of a page (0xffc
- // offset) into an ADR instruction. If so, be sure to calculate the
- // offset for an ADR instead of ADRP.
- //
- if ((*(UINT32 *)Targ & BIT31) == 0) {
- //
- // Calculate the offset for an ADR.
- //
- Offset = (Sym->st_value & ~0xfff) - Rel->r_offset;
- if (Offset < -0x100000 || Offset > 0xfffff) {
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s due to its size (> 1 MB), unable to relocate ADR.",
- mInImageName);
- break;
- }
- } else {
- //
- // Calculate the offset for an ADRP.
- //
- Offset = (Sym->st_value - (Rel->r_offset & ~0xfff)) >> 12;
- }
-
- *(UINT32 *)Targ &= 0x9000001f;
- *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);
-
- /* fall through */
-
- case R_AARCH64_ADR_PREL_PG_HI21:
- //
- // In order to handle Cortex-A53 erratum #843419, the LD linker may
- // convert ADRP instructions into ADR instructions, but without
- // updating the static relocation type, and so we may end up here
- // while the instruction in question is actually ADR. So let's
- // just disregard it: the section offset check we apply below to
- // ADR instructions will trigger for its R_AARCH64_xxx_ABS_LO12_NC
- // companion instruction as well, so it is safe to omit it here.
- //
- if ((*(UINT32 *)Targ & BIT31) == 0) {
- break;
- }
-
- //
- // AArch64 PG_H21 relocations are typically paired with ABS_LO12
- // relocations, where a PC-relative reference with +/- 4 GB range is
- // split into a relative high part and an absolute low part. Since
- // the absolute low part represents the offset into a 4 KB page, we
- // either have to convert the ADRP into an ADR instruction, or we
- // need to use a section alignment of at least 4 KB, so that the
- // binary appears at a correct offset at runtime. In any case, we
- // have to make sure that the 4 KB relative offsets of both the
- // section containing the reference as well as the section to which
- // it refers have not been changed during PE/COFF conversion (i.e.,
- // in ScanSections64() above).
- //
- if (mCoffAlignment < 0x1000) {
- //
- // Attempt to convert the ADRP into an ADR instruction.
- // This is only possible if the symbol is within +/- 1 MB.
- //
-
- // Decode the ADRP instruction
- Offset = (INT32)((*(UINT32 *)Targ & 0xffffe0) << 8);
- Offset = (Offset << (6 - 5)) | ((*(UINT32 *)Targ & 0x60000000) >> (29 - 12));
-
- //
- // ADRP offset is relative to the previous page boundary,
- // whereas ADR offset is relative to the instruction itself.
- // So fix up the offset so it points to the page containing
- // the symbol.
- //
- Offset -= (UINTN)(Targ - mCoffFile) & 0xfff;
-
- if (Offset < -0x100000 || Offset > 0xfffff) {
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s due to its size (> 1 MB), this module requires 4 KB section alignment.",
- mInImageName);
- break;
- }
-
- // Re-encode the offset as an ADR instruction
- *(UINT32 *)Targ &= 0x1000001f;
- *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);
- }
- /* fall through */
-
- case R_AARCH64_ADD_ABS_LO12_NC:
- case R_AARCH64_LDST8_ABS_LO12_NC:
- case R_AARCH64_LDST16_ABS_LO12_NC:
- case R_AARCH64_LDST32_ABS_LO12_NC:
- case R_AARCH64_LDST64_ABS_LO12_NC:
- case R_AARCH64_LDST128_ABS_LO12_NC:
- if (((SecShdr->sh_addr ^ SecOffset) & 0xfff) != 0 ||
- ((SymShdr->sh_addr ^ mCoffSectionsOffset[Sym->st_shndx]) & 0xfff) != 0) {
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 small code model requires identical ELF and PE/COFF section offsets modulo 4 KB.",
- mInImageName);
- break;
- }
- /* fall through */
-
- case R_AARCH64_ADR_PREL_LO21:
- case R_AARCH64_CONDBR19:
- case R_AARCH64_LD_PREL_LO19:
- case R_AARCH64_CALL26:
- case R_AARCH64_JUMP26:
- case R_AARCH64_PREL64:
- case R_AARCH64_PREL32:
- case R_AARCH64_PREL16:
- //
- // The GCC toolchains (i.e., binutils) may corrupt section relative
- // relocations when emitting relocation sections into fully linked
- // binaries. More specifically, they tend to fail to take into
- // account the fact that a '.rodata + XXX' relocation needs to have
- // its addend recalculated once .rodata is merged into the .text
- // section, and the relocation emitted into the .rela.text section.
- //
- // We cannot really recover from this loss of information, so the
- // only workaround is to prevent having to recalculate any relative
- // relocations at all, by using a linker script that ensures that
- // the offset between the Place and the Symbol is the same in both
- // the ELF and the PE/COFF versions of the binary.
- //
- if ((SymShdr->sh_addr - SecShdr->sh_addr) !=
- (mCoffSectionsOffset[Sym->st_shndx] - SecOffset)) {
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 relative relocations require identical ELF and PE/COFF section offsets",
- mInImageName);
- }
- break;
-
- // Absolute relocations.
- case R_AARCH64_ABS64:
- *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
- break;
-
- default:
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
- }
- } else if (mEhdr->e_machine == EM_RISCV64) {
- //
- // Write section for RISC-V 64 architecture.
- //
- WriteSectionRiscV64 (Rel, Targ, SymShdr, Sym);
- } else if (mEhdr->e_machine == EM_LOONGARCH) {
- switch (ELF_R_TYPE(Rel->r_info)) {
- INT64 Offset;
- INT32 Lo, Hi;
-
- case R_LARCH_SOP_PUSH_ABSOLUTE:
- //
- // Absolute relocation.
- //
- *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
- break;
-
- case R_LARCH_MARK_LA:
- case R_LARCH_64:
- case R_LARCH_NONE:
- case R_LARCH_32:
- case R_LARCH_RELATIVE:
- case R_LARCH_COPY:
- case R_LARCH_JUMP_SLOT:
- case R_LARCH_TLS_DTPMOD32:
- case R_LARCH_TLS_DTPMOD64:
- case R_LARCH_TLS_DTPREL32:
- case R_LARCH_TLS_DTPREL64:
- case R_LARCH_TLS_TPREL32:
- case R_LARCH_TLS_TPREL64:
- case R_LARCH_IRELATIVE:
- case R_LARCH_MARK_PCREL:
- case R_LARCH_SOP_PUSH_PCREL:
- case R_LARCH_SOP_PUSH_DUP:
- case R_LARCH_SOP_PUSH_GPREL:
- case R_LARCH_SOP_PUSH_TLS_TPREL:
- case R_LARCH_SOP_PUSH_TLS_GOT:
- case R_LARCH_SOP_PUSH_TLS_GD:
- case R_LARCH_SOP_PUSH_PLT_PCREL:
- case R_LARCH_SOP_ASSERT:
- case R_LARCH_SOP_NOT:
- case R_LARCH_SOP_SUB:
- case R_LARCH_SOP_SL:
- case R_LARCH_SOP_SR:
- case R_LARCH_SOP_ADD:
- case R_LARCH_SOP_AND:
- case R_LARCH_SOP_IF_ELSE:
- case R_LARCH_SOP_POP_32_S_10_5:
- case R_LARCH_SOP_POP_32_U_10_12:
- case R_LARCH_SOP_POP_32_S_10_12:
- case R_LARCH_SOP_POP_32_S_10_16:
- case R_LARCH_SOP_POP_32_S_10_16_S2:
- case R_LARCH_SOP_POP_32_S_5_20:
- case R_LARCH_SOP_POP_32_S_0_5_10_16_S2:
- case R_LARCH_SOP_POP_32_S_0_10_10_16_S2:
- case R_LARCH_SOP_POP_32_U:
- case R_LARCH_ADD8:
- case R_LARCH_ADD16:
- case R_LARCH_ADD24:
- case R_LARCH_ADD32:
- case R_LARCH_ADD64:
- case R_LARCH_SUB8:
- case R_LARCH_SUB16:
- case R_LARCH_SUB24:
- case R_LARCH_SUB32:
- case R_LARCH_SUB64:
- case R_LARCH_GNU_VTINHERIT:
- case R_LARCH_GNU_VTENTRY:
- case R_LARCH_B16:
- case R_LARCH_B21:
- case R_LARCH_B26:
- case R_LARCH_ABS_HI20:
- case R_LARCH_ABS_LO12:
- case R_LARCH_ABS64_LO20:
- case R_LARCH_ABS64_HI12:
- case R_LARCH_PCALA_LO12:
- case R_LARCH_PCALA64_LO20:
- case R_LARCH_PCALA64_HI12:
- case R_LARCH_GOT_PC_LO12:
- case R_LARCH_GOT64_PC_LO20:
- case R_LARCH_GOT64_PC_HI12:
- case R_LARCH_GOT64_HI20:
- case R_LARCH_GOT64_LO12:
- case R_LARCH_GOT64_LO20:
- case R_LARCH_GOT64_HI12:
- case R_LARCH_TLS_LE_HI20:
- case R_LARCH_TLS_LE_LO12:
- case R_LARCH_TLS_LE64_LO20:
- case R_LARCH_TLS_LE64_HI12:
- case R_LARCH_TLS_IE_PC_HI20:
- case R_LARCH_TLS_IE_PC_LO12:
- case R_LARCH_TLS_IE64_PC_LO20:
- case R_LARCH_TLS_IE64_PC_HI12:
- case R_LARCH_TLS_IE64_HI20:
- case R_LARCH_TLS_IE64_LO12:
- case R_LARCH_TLS_IE64_LO20:
- case R_LARCH_TLS_IE64_HI12:
- case R_LARCH_TLS_LD_PC_HI20:
- case R_LARCH_TLS_LD64_HI20:
- case R_LARCH_TLS_GD_PC_HI20:
- case R_LARCH_TLS_GD64_HI20:
- case R_LARCH_32_PCREL:
- case R_LARCH_RELAX:
- case R_LARCH_DELETE:
- case R_LARCH_ALIGN:
- case R_LARCH_PCREL20_S2:
- case R_LARCH_CFA:
- case R_LARCH_ADD6:
- case R_LARCH_SUB6:
- case R_LARCH_ADD_ULEB128:
- case R_LARCH_SUB_ULEB128:
- case R_LARCH_64_PCREL:
- //
- // These types are not used or do not require fixup.
- //
- break;
-
- case R_LARCH_GOT_PC_HI20:
- Offset = Sym->st_value - (UINTN)(Targ - mCoffFile);
- if (Offset < 0) {
- Offset = (UINTN)(Targ - mCoffFile) - Sym->st_value;
- Hi = Offset & ~0xfff;
- Lo = (INT32)((Offset & 0xfff) << 20) >> 20;
- if ((Lo < 0) && (Lo > -2048)) {
- Hi += 0x1000;
- Lo = ~(0x1000 - Lo) + 1;
- }
- Hi = ~Hi + 1;
- Lo = ~Lo + 1;
- } else {
- Hi = Offset & ~0xfff;
- Lo = (INT32)((Offset & 0xfff) << 20) >> 20;
- if (Lo < 0) {
- Hi += 0x1000;
- Lo = ~(0x1000 - Lo) + 1;
- }
- }
- // Re-encode the offset as PCADDU12I + ADDI.D(Convert LD.D) instruction
- *(UINT32 *)Targ &= 0x1f;
- *(UINT32 *)Targ |= 0x1c000000;
- *(UINT32 *)Targ |= (((Hi >> 12) & 0xfffff) << 5);
- *(UINT32 *)(Targ + 4) &= 0x3ff;
- *(UINT32 *)(Targ + 4) |= 0x2c00000 | ((Lo & 0xfff) << 10);
- break;
-
- //
- // Attempt to convert instruction.
- //
- case R_LARCH_PCALA_HI20:
- // Decode the PCALAU12I instruction and the instruction that following it.
- Offset = ((INT32)((*(UINT32 *)Targ & 0x1ffffe0) << 7));
- Offset += ((INT32)((*(UINT32 *)(Targ + 4) & 0x3ffc00) << 10) >> 20);
- //
- // PCALA offset is relative to the previous page boundary,
- // whereas PCADD offset is relative to the instruction itself.
- // So fix up the offset so it points to the page containing
- // the symbol.
- //
- Offset -= (UINTN)(Targ - mCoffFile) & 0xfff;
- if (Offset < 0) {
- Offset = -Offset;
- Hi = Offset & ~0xfff;
- Lo = (INT32)((Offset & 0xfff) << 20) >> 20;
- if ((Lo < 0) && (Lo > -2048)) {
- Hi += 0x1000;
- Lo = ~(0x1000 - Lo) + 1;
- }
- Hi = ~Hi + 1;
- Lo = ~Lo + 1;
- } else {
- Hi = Offset & ~0xfff;
- Lo = (INT32)((Offset & 0xfff) << 20) >> 20;
- if (Lo < 0) {
- Hi += 0x1000;
- Lo = ~(0x1000 - Lo) + 1;
- }
- }
- // Convert the first instruction from PCALAU12I to PCADDU12I and re-encode the offset into them.
- *(UINT32 *)Targ &= 0x1f;
- *(UINT32 *)Targ |= 0x1c000000;
- *(UINT32 *)Targ |= (((Hi >> 12) & 0xfffff) << 5);
- *(UINT32 *)(Targ + 4) &= 0xffc003ff;
- *(UINT32 *)(Targ + 4) |= (Lo & 0xfff) << 10;
- break;
- default:
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_LOONGARCH relocation 0x%x.", mInImageName, (unsigned) ELF64_R_TYPE(Rel->r_info));
- }
- } else {
- Error (NULL, 0, 3000, "Invalid", "Not a supported machine type");
- }
- }
- }
- }
-
- return TRUE;
-}
-
-STATIC
-VOID
-WriteRelocations64 (
- VOID
- )
-{
- UINT32 Index;
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
- EFI_IMAGE_DATA_DIRECTORY *Dir;
- UINT32 RiscVRelType;
-
- for (Index = 0; Index < mEhdr->e_shnum; Index++) {
- Elf_Shdr *RelShdr = GetShdrByIndex(Index);
- if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {
- Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);
- if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {
- UINT64 RelIdx;
-
- for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {
- Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
-
- if (mEhdr->e_machine == EM_X86_64) {
- switch (ELF_R_TYPE(Rel->r_info)) {
- case R_X86_64_NONE:
- case R_X86_64_PC32:
- case R_X86_64_PLT32:
- case R_X86_64_GOTPCREL:
- case R_X86_64_GOTPCRELX:
- case R_X86_64_REX_GOTPCRELX:
- break;
- case R_X86_64_64:
- VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08llX",
- mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_DIR64);
- break;
- //
- // R_X86_64_32 and R_X86_64_32S are ELF64 relocations emitted when using
- // the SYSV X64 ABI small non-position-independent code model.
- // R_X86_64_32 is used for unsigned 32-bit immediates with a 32-bit operand
- // size. The value is either not extended, or zero-extended to 64 bits.
- // R_X86_64_32S is used for either signed 32-bit non-rip-relative displacements
- // or signed 32-bit immediates with a 64-bit operand size. The value is
- // sign-extended to 64 bits.
- // EFI_IMAGE_REL_BASED_HIGHLOW is a PE relocation that uses 32-bit arithmetic
- // for rebasing an image.
- // EFI PE binaries declare themselves EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE and
- // may load above 2GB. If an EFI PE binary with a converted R_X86_64_32S
- // relocation is loaded above 2GB, the value will get sign-extended to the
- // negative part of the 64-bit address space. The negative part of the 64-bit
- // address space is unmapped, so accessing such an address page-faults.
- // In order to support R_X86_64_32S, it is necessary to unset
- // EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE, and the EFI PE loader must implement
- // this flag and abstain from loading such a PE binary above 2GB.
- // Since this feature is not supported, support for R_X86_64_32S (and hence
- // the small non-position-independent code model) is disabled.
- //
- // case R_X86_64_32S:
- case R_X86_64_32:
- VerboseMsg ("EFI_IMAGE_REL_BASED_HIGHLOW Offset: 0x%08llX",
- mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_HIGHLOW);
- break;
- default:
- Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
- }
- } else if (mEhdr->e_machine == EM_AARCH64) {
-
- switch (ELF_R_TYPE(Rel->r_info)) {
- case R_AARCH64_ADR_PREL_LO21:
- case R_AARCH64_CONDBR19:
- case R_AARCH64_LD_PREL_LO19:
- case R_AARCH64_CALL26:
- case R_AARCH64_JUMP26:
- case R_AARCH64_PREL64:
- case R_AARCH64_PREL32:
- case R_AARCH64_PREL16:
- case R_AARCH64_ADR_PREL_PG_HI21:
- case R_AARCH64_ADD_ABS_LO12_NC:
- case R_AARCH64_LDST8_ABS_LO12_NC:
- case R_AARCH64_LDST16_ABS_LO12_NC:
- case R_AARCH64_LDST32_ABS_LO12_NC:
- case R_AARCH64_LDST64_ABS_LO12_NC:
- case R_AARCH64_LDST128_ABS_LO12_NC:
- case R_AARCH64_ADR_GOT_PAGE:
- case R_AARCH64_LD64_GOT_LO12_NC:
- case R_AARCH64_LD64_GOTOFF_LO15:
- case R_AARCH64_LD64_GOTPAGE_LO15:
- //
- // No fixups are required for relative relocations, provided that
- // the relative offsets between sections have been preserved in
- // the ELF to PE/COFF conversion. We have already asserted that
- // this is the case in WriteSections64 ().
- //
- break;
-
- case R_AARCH64_ABS64:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_DIR64);
- break;
-
- case R_AARCH64_ABS32:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_HIGHLOW);
- break;
-
- default:
- Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
- }
- } else if (mEhdr->e_machine == EM_RISCV64) {
- RiscVRelType = ELF_R_TYPE(Rel->r_info);
- switch (RiscVRelType) {
- case R_RISCV_NONE:
- break;
-
- case R_RISCV_32:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_HIGHLOW);
- break;
-
- case R_RISCV_64:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_DIR64);
- break;
-
- case R_RISCV_HI20:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_RISCV_HI20);
- break;
-
- case R_RISCV_LO12_I:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_RISCV_LOW12I);
- break;
-
- case R_RISCV_LO12_S:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_RISCV_LOW12S);
- break;
-
- case R_RISCV_ADD64:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_ABSOLUTE);
- break;
-
- case R_RISCV_SUB64:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_ABSOLUTE);
- break;
-
- case R_RISCV_ADD32:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_ABSOLUTE);
- break;
-
- case R_RISCV_SUB32:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_ABSOLUTE);
- break;
-
- case R_RISCV_BRANCH:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_ABSOLUTE);
- break;
-
- case R_RISCV_JAL:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_ABSOLUTE);
- break;
-
- case R_RISCV_GPREL_I:
- case R_RISCV_GPREL_S:
- case R_RISCV_CALL:
- case R_RISCV_CALL_PLT:
- case R_RISCV_RVC_BRANCH:
- case R_RISCV_RVC_JUMP:
- case R_RISCV_RELAX:
- case R_RISCV_SUB6:
- case R_RISCV_SET6:
- case R_RISCV_SET8:
- case R_RISCV_SET16:
- case R_RISCV_SET32:
- case R_RISCV_PCREL_HI20:
- case R_RISCV_GOT_HI20:
- case R_RISCV_PCREL_LO12_I:
- case R_RISCV_PCREL_LO12_S:
- break;
-
- default:
- Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_RISCV64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
- }
- } else if (mEhdr->e_machine == EM_LOONGARCH) {
- switch (ELF_R_TYPE(Rel->r_info)) {
- case R_LARCH_MARK_LA:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_LOONGARCH64_MARK_LA);
- break;
- case R_LARCH_64:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_DIR64);
- break;
- case R_LARCH_NONE:
- case R_LARCH_32:
- case R_LARCH_RELATIVE:
- case R_LARCH_COPY:
- case R_LARCH_JUMP_SLOT:
- case R_LARCH_TLS_DTPMOD32:
- case R_LARCH_TLS_DTPMOD64:
- case R_LARCH_TLS_DTPREL32:
- case R_LARCH_TLS_DTPREL64:
- case R_LARCH_TLS_TPREL32:
- case R_LARCH_TLS_TPREL64:
- case R_LARCH_IRELATIVE:
- case R_LARCH_MARK_PCREL:
- case R_LARCH_SOP_PUSH_PCREL:
- case R_LARCH_SOP_PUSH_ABSOLUTE:
- case R_LARCH_SOP_PUSH_DUP:
- case R_LARCH_SOP_PUSH_GPREL:
- case R_LARCH_SOP_PUSH_TLS_TPREL:
- case R_LARCH_SOP_PUSH_TLS_GOT:
- case R_LARCH_SOP_PUSH_TLS_GD:
- case R_LARCH_SOP_PUSH_PLT_PCREL:
- case R_LARCH_SOP_ASSERT:
- case R_LARCH_SOP_NOT:
- case R_LARCH_SOP_SUB:
- case R_LARCH_SOP_SL:
- case R_LARCH_SOP_SR:
- case R_LARCH_SOP_ADD:
- case R_LARCH_SOP_AND:
- case R_LARCH_SOP_IF_ELSE:
- case R_LARCH_SOP_POP_32_S_10_5:
- case R_LARCH_SOP_POP_32_U_10_12:
- case R_LARCH_SOP_POP_32_S_10_12:
- case R_LARCH_SOP_POP_32_S_10_16:
- case R_LARCH_SOP_POP_32_S_10_16_S2:
- case R_LARCH_SOP_POP_32_S_5_20:
- case R_LARCH_SOP_POP_32_S_0_5_10_16_S2:
- case R_LARCH_SOP_POP_32_S_0_10_10_16_S2:
- case R_LARCH_SOP_POP_32_U:
- case R_LARCH_ADD8:
- case R_LARCH_ADD16:
- case R_LARCH_ADD24:
- case R_LARCH_ADD32:
- case R_LARCH_ADD64:
- case R_LARCH_SUB8:
- case R_LARCH_SUB16:
- case R_LARCH_SUB24:
- case R_LARCH_SUB32:
- case R_LARCH_SUB64:
- case R_LARCH_GNU_VTINHERIT:
- case R_LARCH_GNU_VTENTRY:
- case R_LARCH_B16:
- case R_LARCH_B21:
- case R_LARCH_B26:
- case R_LARCH_ABS_HI20:
- case R_LARCH_ABS_LO12:
- case R_LARCH_ABS64_LO20:
- case R_LARCH_ABS64_HI12:
- case R_LARCH_PCALA_HI20:
- case R_LARCH_PCALA_LO12:
- case R_LARCH_PCALA64_LO20:
- case R_LARCH_PCALA64_HI12:
- case R_LARCH_GOT_PC_HI20:
- case R_LARCH_GOT_PC_LO12:
- case R_LARCH_GOT64_PC_LO20:
- case R_LARCH_GOT64_PC_HI12:
- case R_LARCH_GOT64_HI20:
- case R_LARCH_GOT64_LO12:
- case R_LARCH_GOT64_LO20:
- case R_LARCH_GOT64_HI12:
- case R_LARCH_TLS_LE_HI20:
- case R_LARCH_TLS_LE_LO12:
- case R_LARCH_TLS_LE64_LO20:
- case R_LARCH_TLS_LE64_HI12:
- case R_LARCH_TLS_IE_PC_HI20:
- case R_LARCH_TLS_IE_PC_LO12:
- case R_LARCH_TLS_IE64_PC_LO20:
- case R_LARCH_TLS_IE64_PC_HI12:
- case R_LARCH_TLS_IE64_HI20:
- case R_LARCH_TLS_IE64_LO12:
- case R_LARCH_TLS_IE64_LO20:
- case R_LARCH_TLS_IE64_HI12:
- case R_LARCH_TLS_LD_PC_HI20:
- case R_LARCH_TLS_LD64_HI20:
- case R_LARCH_TLS_GD_PC_HI20:
- case R_LARCH_TLS_GD64_HI20:
- case R_LARCH_32_PCREL:
- case R_LARCH_RELAX:
- case R_LARCH_DELETE:
- case R_LARCH_ALIGN:
- case R_LARCH_PCREL20_S2:
- case R_LARCH_CFA:
- case R_LARCH_ADD6:
- case R_LARCH_SUB6:
- case R_LARCH_ADD_ULEB128:
- case R_LARCH_SUB_ULEB128:
- case R_LARCH_64_PCREL:
- //
- // These types are not used or do not require fixup in PE format files.
- //
- break;
- default:
- Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_LOONGARCH relocation 0x%x.", mInImageName, (unsigned) ELF64_R_TYPE(Rel->r_info));
- }
- } else {
- Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine);
- }
- }
- if (mEhdr->e_machine == EM_X86_64 && RelShdr->sh_info == mGOTShindex) {
- //
- // Tack relocations for GOT entries after other relocations for
- // the section the GOT is in, as it's usually found at the end
- // of the section. This is done in order to maintain Rva order
- // of Coff relocations.
- //
- EmitGOTRelocations();
- }
- }
- }
- }
-
- if (mEhdr->e_machine == EM_X86_64) {
- //
- // This is a safety net just in case the GOT is in a section
- // with no other relocations and the first invocation of
- // EmitGOTRelocations() above was skipped. This invocation
- // does not maintain Rva order of Coff relocations.
- // At present, with a single text section, all references to
- // the GOT and the GOT itself reside in section .text, so
- // if there's a GOT at all, the first invocation above
- // is executed.
- //
- EmitGOTRelocations();
- }
- //
- // Pad by adding empty entries.
- //
- while (mCoffOffset & (mCoffAlignment - 1)) {
- CoffAddFixupEntry(0);
- }
-
- NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
- Dir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
- Dir->Size = mCoffOffset - mRelocOffset;
- if (Dir->Size == 0) {
- // If no relocations, null out the directory entry and don't add the .reloc section
- Dir->VirtualAddress = 0;
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- } else {
- Dir->VirtualAddress = mRelocOffset;
- CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,
- EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
- | EFI_IMAGE_SCN_MEM_DISCARDABLE
- | EFI_IMAGE_SCN_MEM_READ);
- }
-}
-
-STATIC
-VOID
-WriteDebug64 (
- VOID
- )
-{
- UINT32 Len;
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
- EFI_IMAGE_DATA_DIRECTORY *DataDir;
- EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *Dir;
- EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;
- EFI_IMAGE_DEBUG_EX_DLLCHARACTERISTICS_ENTRY *DllEntry;
-
- Len = strlen(mInImageName) + 1;
-
- NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
- DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];
- DataDir->VirtualAddress = mDebugOffset;
- DataDir->Size = sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
-
- Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);
-
- if (mDllCharacteristicsEx != 0) {
- DataDir->Size += sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
-
- Dir->Type = EFI_IMAGE_DEBUG_TYPE_EX_DLLCHARACTERISTICS;
- Dir->SizeOfData = sizeof (EFI_IMAGE_DEBUG_EX_DLLCHARACTERISTICS_ENTRY);
- Dir->FileOffset = mDebugOffset + DataDir->Size +
- sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +
- DebugRvaAlign(Len);
- Dir->RVA = Dir->FileOffset;
-
- DllEntry = (VOID *)(mCoffFile + Dir->FileOffset);
-
- DllEntry->DllCharacteristicsEx = mDllCharacteristicsEx;
-
- Dir++;
- }
-
- Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;
- Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;
- Dir->RVA = mDebugOffset + DataDir->Size;
- Dir->FileOffset = mDebugOffset + DataDir->Size;
-
- Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);
- Nb10->Signature = CODEVIEW_SIGNATURE_NB10;
- strcpy ((char *)(Nb10 + 1), mInImageName);
-}
-
-STATIC
-VOID
-SetImageSize64 (
- VOID
- )
-{
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
-
- //
- // Set image size
- //
- NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
- NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = mCoffOffset;
-}
-
-STATIC
-VOID
-CleanUp64 (
- VOID
- )
-{
- if (mCoffSectionsOffset != NULL) {
- free (mCoffSectionsOffset);
- }
-}
-
-STATIC
-VOID
-WriteExport64 (
- VOID
- )
-{
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
- EFI_IMAGE_EXPORT_DIRECTORY *ExportDir;
- EFI_IMAGE_DATA_DIRECTORY *DataDir;
- UINT32 FileNameOffset;
- UINT32 NameOffset;
- UINT16 Index;
- UINT8 *Tdata = NULL;
-
- ExportDir = (EFI_IMAGE_EXPORT_DIRECTORY*)(mCoffFile + mExportOffset);
- ExportDir->Characteristics = 0;
- ExportDir->TimeDateStamp = 0;
- ExportDir->MajorVersion = 0;
- ExportDir->MinorVersion =0;
- ExportDir->Name = 0;
- ExportDir->NumberOfFunctions = mExportSymNum;
- ExportDir->NumberOfNames = mExportSymNum;
- ExportDir->Base = EFI_IMAGE_EXPORT_ORDINAL_BASE;
- ExportDir->AddressOfFunctions = mExportOffset + sizeof(EFI_IMAGE_EXPORT_DIRECTORY);
- ExportDir->AddressOfNames = ExportDir->AddressOfFunctions + EFI_IMAGE_EXPORT_ADDR_SIZE * mExportSymNum;
- ExportDir->AddressOfNameOrdinals = ExportDir->AddressOfNames + EFI_IMAGE_EXPORT_ADDR_SIZE * mExportSymNum;
-
- FileNameOffset = ExportDir->AddressOfNameOrdinals + EFI_IMAGE_EXPORT_ORDINAL_SIZE * mExportSymNum;
- NameOffset = FileNameOffset + strlen(mInImageName) + 1;
-
- // Write Input image Name RVA
- ExportDir->Name = FileNameOffset;
-
- // Write Input image Name
- strcpy((char *)(mCoffFile + FileNameOffset), mInImageName);
-
- for (Index = 0; Index < mExportSymNum; Index++) {
- //
- // Write Export Address Table
- //
- Tdata = mCoffFile + ExportDir->AddressOfFunctions + Index * EFI_IMAGE_EXPORT_ADDR_SIZE;
- *(UINT32 *)Tdata = mExportRVA[Index];
-
- //
- // Write Export Name Pointer Table
- //
- Tdata = mCoffFile + ExportDir->AddressOfNames + Index * EFI_IMAGE_EXPORT_ADDR_SIZE;
- *(UINT32 *)Tdata = NameOffset;
-
- //
- // Write Export Ordinal table
- //
- Tdata = mCoffFile + ExportDir->AddressOfNameOrdinals + Index * EFI_IMAGE_EXPORT_ORDINAL_SIZE;
- *(UINT16 *)Tdata = Index;
-
- //
- // Write Export Name Table
- //
- strcpy((char *)(mCoffFile + NameOffset), mExportSymName[Index]);
- NameOffset += strlen(mExportSymName[Index]) + 1;
- }
-
- NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
- DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_EXPORT];
- DataDir->VirtualAddress = mExportOffset;
- DataDir->Size = mExportSize;
-
-}
-
+/** @file
+Elf64 convert solution
+
+Copyright (c) 2010 - 2021, Intel Corporation. All rights reserved.<BR>
+Portions copyright (c) 2013-2022, ARM Ltd. All rights reserved.<BR>
+Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+Portions Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __GNUC__
+#include <windows.h>
+#include <io.h>
+#endif
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <ctype.h>
+
+#include <Common/UefiBaseTypes.h>
+#include <IndustryStandard/PeImage.h>
+
+#include "PeCoffLib.h"
+#include "EfiUtilityMsgs.h"
+
+#include "GenFw.h"
+#include "ElfConvert.h"
+#include "Elf64Convert.h"
+
+STATIC
+VOID
+ScanSections64 (
+ VOID
+ );
+
+STATIC
+BOOLEAN
+WriteSections64 (
+ SECTION_FILTER_TYPES FilterType
+ );
+
+STATIC
+VOID
+WriteRelocations64 (
+ VOID
+ );
+
+STATIC
+VOID
+WriteDebug64 (
+ VOID
+ );
+
+STATIC
+VOID
+WriteExport64 (
+ VOID
+ );
+
+STATIC
+VOID
+SetImageSize64 (
+ VOID
+ );
+
+STATIC
+VOID
+CleanUp64 (
+ VOID
+ );
+
+//
+// Rename ELF32 structures to common names to help when porting to ELF64.
+//
+typedef Elf64_Shdr Elf_Shdr;
+typedef Elf64_Ehdr Elf_Ehdr;
+typedef Elf64_Rel Elf_Rel;
+typedef Elf64_Rela Elf_Rela;
+typedef Elf64_Sym Elf_Sym;
+typedef Elf64_Phdr Elf_Phdr;
+typedef Elf64_Dyn Elf_Dyn;
+#define ELFCLASS ELFCLASS64
+#define ELF_R_TYPE(r) ELF64_R_TYPE(r)
+#define ELF_R_SYM(r) ELF64_R_SYM(r)
+
+//
+// Well known ELF structures.
+//
+STATIC Elf_Ehdr *mEhdr;
+STATIC Elf_Shdr *mShdrBase;
+STATIC Elf_Phdr *mPhdrBase;
+
+//
+// GOT information
+//
+STATIC Elf_Shdr *mGOTShdr = NULL;
+STATIC UINT32 mGOTShindex = 0;
+STATIC UINT32 *mGOTCoffEntries = NULL;
+STATIC UINT32 mGOTMaxCoffEntries = 0;
+STATIC UINT32 mGOTNumCoffEntries = 0;
+
+//
+// Coff information
+//
+STATIC UINT32 mCoffAlignment = 0x20;
+
+//
+// PE section alignment.
+//
+STATIC UINT16 mCoffNbrSections = 4;
+
+//
+// ELF sections to offset in Coff file.
+//
+STATIC UINT32 *mCoffSectionsOffset = NULL;
+
+//
+// Offsets in COFF file
+//
+STATIC UINT32 mNtHdrOffset;
+STATIC UINT32 mTextOffset;
+STATIC UINT32 mDataOffset;
+STATIC UINT32 mHiiRsrcOffset;
+STATIC UINT32 mRelocOffset;
+STATIC UINT32 mDebugOffset;
+STATIC UINT32 mExportOffset;
+//
+// Used for RISC-V relocations.
+//
+STATIC UINT8 *mRiscVPass1Targ = NULL;
+STATIC Elf_Shdr *mRiscVPass1Sym = NULL;
+STATIC Elf64_Half mRiscVPass1SymSecIndex = 0;
+STATIC INT32 mRiscVPass1Offset;
+STATIC INT32 mRiscVPass1GotFixup;
+
+//
+// Used for Export section.
+//
+STATIC UINT32 mExportSize;
+STATIC UINT32 mExportRVA[PRM_MODULE_EXPORT_SYMBOL_NUM];
+STATIC UINT32 mExportSymNum;
+STATIC CHAR8 mExportSymName[PRM_MODULE_EXPORT_SYMBOL_NUM][PRM_HANDLER_NAME_MAXIMUM_LENGTH];
+
+//
+// Initialization Function
+//
+BOOLEAN
+InitializeElf64 (
+ UINT8 *FileBuffer,
+ ELF_FUNCTION_TABLE *ElfFunctions
+ )
+{
+ //
+ // Initialize data pointer and structures.
+ //
+ VerboseMsg ("Set EHDR");
+ mEhdr = (Elf_Ehdr*) FileBuffer;
+
+ //
+ // Check the ELF64 specific header information.
+ //
+ VerboseMsg ("Check ELF64 Header Information");
+ if (mEhdr->e_ident[EI_CLASS] != ELFCLASS64) {
+ Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS64");
+ return FALSE;
+ }
+ if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) {
+ Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB");
+ return FALSE;
+ }
+ if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) {
+ Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN");
+ return FALSE;
+ }
+ if (!((mEhdr->e_machine == EM_X86_64) || (mEhdr->e_machine == EM_AARCH64) || (mEhdr->e_machine == EM_RISCV64) || (mEhdr->e_machine == EM_LOONGARCH))) {
+ Warning (NULL, 0, 3000, "Unsupported", "ELF e_machine is not Elf64 machine.");
+ }
+ if (mEhdr->e_version != EV_CURRENT) {
+ Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);
+ return FALSE;
+ }
+
+ if (mExportFlag) {
+ if ((mEhdr->e_machine != EM_X86_64) && (mEhdr->e_machine != EM_AARCH64)) {
+ Error (NULL, 0, 3000, "Unsupported", "--prm option currently only supports X64 and AArch64 archs.");
+ return FALSE;
+ }
+ }
+
+ //
+ // Update section header pointers
+ //
+ VerboseMsg ("Update Header Pointers");
+ mShdrBase = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff);
+ mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff);
+
+ //
+ // Create COFF Section offset buffer and zero.
+ //
+ VerboseMsg ("Create COFF Section Offset Buffer");
+ mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));
+ if (mCoffSectionsOffset == NULL) {
+ Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
+ return FALSE;
+ }
+ memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));
+
+ //
+ // Fill in function pointers.
+ //
+ VerboseMsg ("Fill in Function Pointers");
+ ElfFunctions->ScanSections = ScanSections64;
+ ElfFunctions->WriteSections = WriteSections64;
+ ElfFunctions->WriteRelocations = WriteRelocations64;
+ ElfFunctions->WriteDebug = WriteDebug64;
+ ElfFunctions->SetImageSize = SetImageSize64;
+ ElfFunctions->CleanUp = CleanUp64;
+
+ if (mExportFlag) {
+ mCoffNbrSections ++;
+ ElfFunctions->WriteExport = WriteExport64;
+ }
+
+ return TRUE;
+}
+
+
+//
+// Header by Index functions
+//
+STATIC
+Elf_Shdr*
+GetShdrByIndex (
+ UINT32 Num
+ )
+{
+ if (Num >= mEhdr->e_shnum) {
+ Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);
+ exit(EXIT_FAILURE);
+ }
+
+ return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);
+}
+
+STATIC
+UINT32
+CoffAlign (
+ UINT32 Offset
+ )
+{
+ return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);
+}
+
+STATIC
+UINT32
+DebugRvaAlign (
+ UINT32 Offset
+ )
+{
+ return (Offset + 3) & ~3;
+}
+
+//
+// filter functions
+//
+STATIC
+BOOLEAN
+IsTextShdr (
+ Elf_Shdr *Shdr
+ )
+{
+ return (BOOLEAN) (((Shdr->sh_flags & (SHF_EXECINSTR | SHF_ALLOC)) == (SHF_EXECINSTR | SHF_ALLOC)) ||
+ ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC));
+}
+
+STATIC
+BOOLEAN
+IsHiiRsrcShdr (
+ Elf_Shdr *Shdr
+ )
+{
+ Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
+
+ return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);
+}
+
+STATIC
+BOOLEAN
+IsSymbolShdr (
+ Elf_Shdr *Shdr
+ )
+{
+ Elf_Shdr *Namehdr = GetShdrByIndex(mEhdr->e_shstrndx);
+
+ return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namehdr->sh_offset + Shdr->sh_name, ELF_SYMBOL_SECTION_NAME) == 0);
+}
+
+STATIC
+BOOLEAN
+IsDataShdr (
+ Elf_Shdr *Shdr
+ )
+{
+ if (IsHiiRsrcShdr(Shdr)) {
+ return FALSE;
+ }
+ return (BOOLEAN) (Shdr->sh_flags & (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);
+}
+
+STATIC
+BOOLEAN
+IsStrtabShdr (
+ Elf_Shdr *Shdr
+ )
+{
+ Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
+
+ return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);
+}
+
+STATIC
+Elf_Shdr *
+FindStrtabShdr (
+ VOID
+ )
+{
+ UINT32 i;
+ for (i = 0; i < mEhdr->e_shnum; i++) {
+ Elf_Shdr *shdr = GetShdrByIndex(i);
+ if (IsStrtabShdr(shdr)) {
+ return shdr;
+ }
+ }
+ return NULL;
+}
+
+STATIC
+const UINT8 *
+GetSymName (
+ Elf_Sym *Sym
+ )
+{
+ Elf_Shdr *StrtabShdr;
+ UINT8 *StrtabContents;
+ BOOLEAN foundEnd;
+ UINT32 i;
+
+ if (Sym->st_name == 0) {
+ return NULL;
+ }
+
+ StrtabShdr = FindStrtabShdr();
+ if (StrtabShdr == NULL) {
+ return NULL;
+ }
+
+ assert(Sym->st_name < StrtabShdr->sh_size);
+
+ StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;
+
+ foundEnd = FALSE;
+ for (i= Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {
+ foundEnd = (BOOLEAN)(StrtabContents[i] == 0);
+ }
+ assert(foundEnd);
+
+ return StrtabContents + Sym->st_name;
+}
+
+//
+// Get Prm Handler number and name
+//
+STATIC
+VOID
+FindPrmHandler (
+ UINT64 Offset
+ )
+{
+ PRM_MODULE_EXPORT_DESCRIPTOR_STRUCT_HEADER *PrmExport;
+ PRM_HANDLER_EXPORT_DESCRIPTOR_STRUCT *PrmHandler;
+ UINT32 HandlerNum;
+
+ PrmExport = (PRM_MODULE_EXPORT_DESCRIPTOR_STRUCT_HEADER*)((UINT8*)mEhdr + Offset);
+ PrmHandler = (PRM_HANDLER_EXPORT_DESCRIPTOR_STRUCT *)(PrmExport + 1);
+
+ for (HandlerNum = 0; HandlerNum < PrmExport->NumberPrmHandlers; HandlerNum++) {
+ strcpy(mExportSymName[mExportSymNum], PrmHandler->PrmHandlerName);
+ mExportSymNum ++;
+ PrmHandler += 1;
+
+ //
+ // Check if PRM handler number is larger than (PRM_MODULE_EXPORT_SYMBOL_NUM - 1)
+ //
+ if (mExportSymNum >= (PRM_MODULE_EXPORT_SYMBOL_NUM - 1)) {
+ Error (NULL, 0, 3000, "Invalid", "FindPrmHandler: Number %u is too high.", mExportSymNum);
+ exit(EXIT_FAILURE);
+ }
+ }
+}
+
+//
+// Find the ELF section hosting the GOT from an ELF Rva
+// of a single GOT entry. Normally, GOT is placed in
+// ELF .text section, so assume once we find in which
+// section the GOT is, all GOT entries are there, and
+// just verify this.
+//
+STATIC
+VOID
+FindElfGOTSectionFromGOTEntryElfRva (
+ Elf64_Addr GOTEntryElfRva
+ )
+{
+ UINT32 i;
+ if (mGOTShdr != NULL) {
+ if (GOTEntryElfRva >= mGOTShdr->sh_addr &&
+ GOTEntryElfRva < mGOTShdr->sh_addr + mGOTShdr->sh_size) {
+ return;
+ }
+ Error (NULL, 0, 3000, "Unsupported", "FindElfGOTSectionFromGOTEntryElfRva: GOT entries found in multiple sections.");
+ exit(EXIT_FAILURE);
+ }
+ for (i = 0; i < mEhdr->e_shnum; i++) {
+ Elf_Shdr *shdr = GetShdrByIndex(i);
+ if (GOTEntryElfRva >= shdr->sh_addr &&
+ GOTEntryElfRva < shdr->sh_addr + shdr->sh_size) {
+ mGOTShdr = shdr;
+ mGOTShindex = i;
+ return;
+ }
+ }
+ Error (NULL, 0, 3000, "Invalid", "FindElfGOTSectionFromGOTEntryElfRva: ElfRva 0x%016LX for GOT entry not found in any section.", GOTEntryElfRva);
+ exit(EXIT_FAILURE);
+}
+
+//
+// Stores locations of GOT entries in COFF image.
+// Returns TRUE if GOT entry is new.
+// Simple implementation as number of GOT
+// entries is expected to be low.
+//
+
+STATIC
+BOOLEAN
+AccumulateCoffGOTEntries (
+ UINT32 GOTCoffEntry
+ )
+{
+ UINT32 i;
+ if (mGOTCoffEntries != NULL) {
+ for (i = 0; i < mGOTNumCoffEntries; i++) {
+ if (mGOTCoffEntries[i] == GOTCoffEntry) {
+ return FALSE;
+ }
+ }
+ }
+ if (mGOTCoffEntries == NULL) {
+ mGOTCoffEntries = (UINT32*)malloc(5 * sizeof *mGOTCoffEntries);
+ if (mGOTCoffEntries == NULL) {
+ Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
+ }
+ assert (mGOTCoffEntries != NULL);
+ mGOTMaxCoffEntries = 5;
+ mGOTNumCoffEntries = 0;
+ } else if (mGOTNumCoffEntries == mGOTMaxCoffEntries) {
+ mGOTCoffEntries = (UINT32*)realloc(mGOTCoffEntries, 2 * mGOTMaxCoffEntries * sizeof *mGOTCoffEntries);
+ if (mGOTCoffEntries == NULL) {
+ Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
+ }
+ assert (mGOTCoffEntries != NULL);
+ mGOTMaxCoffEntries += mGOTMaxCoffEntries;
+ }
+ mGOTCoffEntries[mGOTNumCoffEntries++] = GOTCoffEntry;
+ return TRUE;
+}
+
+//
+// 32-bit Unsigned integer comparator for qsort.
+//
+STATIC
+int
+UINT32Comparator (
+ const void* lhs,
+ const void* rhs
+ )
+{
+ if (*(const UINT32*)lhs < *(const UINT32*)rhs) {
+ return -1;
+ }
+ return *(const UINT32*)lhs > *(const UINT32*)rhs;
+}
+
+//
+// Emit accumulated Coff GOT entry relocations into
+// Coff image. This function performs its job
+// once and then releases the entry list, so
+// it can safely be called multiple times.
+//
+STATIC
+VOID
+EmitGOTRelocations (
+ VOID
+ )
+{
+ UINT32 i;
+ if (mGOTCoffEntries == NULL) {
+ return;
+ }
+ //
+ // Emit Coff relocations with Rvas ordered.
+ //
+ qsort(
+ mGOTCoffEntries,
+ mGOTNumCoffEntries,
+ sizeof *mGOTCoffEntries,
+ UINT32Comparator);
+ for (i = 0; i < mGOTNumCoffEntries; i++) {
+ VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X", mGOTCoffEntries[i]);
+ CoffAddFixup(
+ mGOTCoffEntries[i],
+ EFI_IMAGE_REL_BASED_DIR64);
+ }
+ free(mGOTCoffEntries);
+ mGOTCoffEntries = NULL;
+ mGOTMaxCoffEntries = 0;
+ mGOTNumCoffEntries = 0;
+}
+//
+// RISC-V 64 specific Elf WriteSection function.
+//
+STATIC
+VOID
+WriteSectionRiscV64 (
+ Elf_Rela *Rel,
+ UINT8 *Targ,
+ Elf_Shdr *SymShdr,
+ Elf_Sym *Sym
+ )
+{
+ UINT32 Value;
+ UINT32 Value2;
+ Elf64_Addr GOTEntryRva;
+
+ switch (ELF_R_TYPE(Rel->r_info)) {
+ case R_RISCV_NONE:
+ break;
+
+ case R_RISCV_32:
+ *(UINT64 *)Targ = Sym->st_value + Rel->r_addend;
+ break;
+
+ case R_RISCV_64:
+ *(UINT64 *)Targ = Sym->st_value + Rel->r_addend;
+ break;
+
+ case R_RISCV_HI20:
+ mRiscVPass1Targ = Targ;
+ mRiscVPass1Sym = SymShdr;
+ mRiscVPass1SymSecIndex = Sym->st_shndx;
+ break;
+
+ case R_RISCV_LO12_I:
+ if (mRiscVPass1Sym == SymShdr && mRiscVPass1Targ != NULL && mRiscVPass1SymSecIndex == Sym->st_shndx && mRiscVPass1SymSecIndex != 0) {
+ Value = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20) << 12);
+ Value2 = (UINT32)(RV_X(*(UINT32 *)Targ, 20, 12));
+ if (Value2 & (RISCV_IMM_REACH/2)) {
+ Value2 |= ~(RISCV_IMM_REACH-1);
+ }
+ Value += Value2;
+ Value = Value - (UINT32)SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
+ Value2 = RISCV_CONST_HIGH_PART (Value);
+ *(UINT32 *)mRiscVPass1Targ = (RV_X (Value2, 12, 20) << 12) | \
+ (RV_X (*(UINT32 *)mRiscVPass1Targ, 0, 12));
+ *(UINT32 *)Targ = (RV_X (Value, 0, 12) << 20) | \
+ (RV_X (*(UINT32 *)Targ, 0, 20));
+ }
+ mRiscVPass1Sym = NULL;
+ mRiscVPass1Targ = NULL;
+ mRiscVPass1SymSecIndex = 0;
+ break;
+
+ case R_RISCV_LO12_S:
+ if (mRiscVPass1Sym == SymShdr && mRiscVPass1Targ != NULL && mRiscVPass1SymSecIndex == Sym->st_shndx && mRiscVPass1SymSecIndex != 0) {
+ Value = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20) << 12);
+ Value2 = (UINT32)(RV_X(*(UINT32 *)Targ, 7, 5) | (RV_X(*(UINT32 *)Targ, 25, 7) << 5));
+ if (Value2 & (RISCV_IMM_REACH/2)) {
+ Value2 |= ~(RISCV_IMM_REACH-1);
+ }
+ Value += Value2;
+ Value = Value - (UINT32)SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
+ Value2 = RISCV_CONST_HIGH_PART (Value);
+ *(UINT32 *)mRiscVPass1Targ = (RV_X (Value2, 12, 20) << 12) | \
+ (RV_X (*(UINT32 *)mRiscVPass1Targ, 0, 12));
+ Value2 = *(UINT32 *)Targ & 0x01fff07f;
+ Value &= RISCV_IMM_REACH - 1;
+ *(UINT32 *)Targ = Value2 | (UINT32)(((RV_X(Value, 0, 5) << 7) | (RV_X(Value, 5, 7) << 25)));
+ }
+ mRiscVPass1Sym = NULL;
+ mRiscVPass1Targ = NULL;
+ mRiscVPass1SymSecIndex = 0;
+ break;
+
+ case R_RISCV_GOT_HI20:
+ GOTEntryRva = (Sym->st_value - Rel->r_offset);
+ mRiscVPass1Offset = RV_X(GOTEntryRva, 0, 12);
+ Value = (UINT32)RV_X(GOTEntryRva, 12, 20);
+ *(UINT32 *)Targ = (Value << 12) | (RV_X(*(UINT32*)Targ, 0, 12));
+
+ mRiscVPass1Targ = Targ;
+ mRiscVPass1Sym = SymShdr;
+ mRiscVPass1SymSecIndex = Sym->st_shndx;
+ mRiscVPass1GotFixup = 1;
+ break;
+
+ case R_RISCV_PCREL_HI20:
+ mRiscVPass1Targ = Targ;
+ mRiscVPass1Sym = SymShdr;
+ mRiscVPass1SymSecIndex = Sym->st_shndx;
+
+ Value = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20));
+ break;
+
+ case R_RISCV_PCREL_LO12_S:
+ if (mRiscVPass1Targ != NULL && mRiscVPass1Sym != NULL && mRiscVPass1SymSecIndex != 0) {
+ int i;
+ Value2 = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20));
+
+ Value = ((UINT32)(RV_X(*(UINT32 *)Targ, 25, 7)) << 5);
+ Value = (Value | (UINT32)(RV_X(*(UINT32 *)Targ, 7, 5)));
+
+ if(Value & (RISCV_IMM_REACH/2)) {
+ Value |= ~(RISCV_IMM_REACH-1);
+ }
+ Value = Value - (UINT32)mRiscVPass1Sym->sh_addr + mCoffSectionsOffset[mRiscVPass1SymSecIndex];
+
+ if(-2048 > (INT32)Value) {
+ i = (((INT32)Value * -1) / 4096);
+ Value2 -= i;
+ Value += 4096 * i;
+ if(-2048 > (INT32)Value) {
+ Value2 -= 1;
+ Value += 4096;
+ }
+ }
+ else if( 2047 < (INT32)Value) {
+ i = (Value / 4096);
+ Value2 += i;
+ Value -= 4096 * i;
+ if(2047 < (INT32)Value) {
+ Value2 += 1;
+ Value -= 4096;
+ }
+ }
+
+ // Update the IMM of SD instruction
+ //
+ // |31 25|24 20|19 15|14 12 |11 7|6 0|
+ // |-------------------------------------------|-------|
+ // |imm[11:5] | rs2 | rs1 | funct3 |imm[4:0] | opcode|
+ // ---------------------------------------------------
+
+ // First Zero out current IMM
+ *(UINT32 *)Targ &= ~0xfe000f80;
+
+ // Update with new IMM
+ *(UINT32 *)Targ |= (RV_X(Value, 5, 7) << 25);
+ *(UINT32 *)Targ |= (RV_X(Value, 0, 5) << 7);
+
+ // Update previous instruction
+ *(UINT32 *)mRiscVPass1Targ = (RV_X(Value2, 0, 20)<<12) | (RV_X(*(UINT32 *)mRiscVPass1Targ, 0, 12));
+ }
+ mRiscVPass1Sym = NULL;
+ mRiscVPass1Targ = NULL;
+ mRiscVPass1SymSecIndex = 0;
+ break;
+
+ case R_RISCV_PCREL_LO12_I:
+ if (mRiscVPass1Targ != NULL && mRiscVPass1Sym != NULL && mRiscVPass1SymSecIndex != 0) {
+ int i;
+ Value2 = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20));
+
+ if(mRiscVPass1GotFixup) {
+ Value = (UINT32)(mRiscVPass1Offset);
+ } else {
+ Value = (UINT32)(RV_X(*(UINT32 *)Targ, 20, 12));
+ if(Value & (RISCV_IMM_REACH/2)) {
+ Value |= ~(RISCV_IMM_REACH-1);
+ }
+ }
+ Value = Value - (UINT32)mRiscVPass1Sym->sh_addr + mCoffSectionsOffset[mRiscVPass1SymSecIndex];
+
+ if(-2048 > (INT32)Value) {
+ i = (((INT32)Value * -1) / 4096);
+ Value2 -= i;
+ Value += 4096 * i;
+ if(-2048 > (INT32)Value) {
+ Value2 -= 1;
+ Value += 4096;
+ }
+ }
+ else if( 2047 < (INT32)Value) {
+ i = (Value / 4096);
+ Value2 += i;
+ Value -= 4096 * i;
+ if(2047 < (INT32)Value) {
+ Value2 += 1;
+ Value -= 4096;
+ }
+ }
+
+ if(mRiscVPass1GotFixup) {
+ *(UINT32 *)Targ = (RV_X((UINT32)Value, 0, 12) << 20)
+ | (RV_X(*(UINT32*)Targ, 0, 20));
+ // Convert LD instruction to ADDI
+ //
+ // |31 20|19 15|14 12|11 7|6 0|
+ // |-----------------------------------------|
+ // |imm[11:0] | rs1 | 011 | rd | 0000011 | LD
+ // -----------------------------------------
+
+ // |-----------------------------------------|
+ // |imm[11:0] | rs1 | 000 | rd | 0010011 | ADDI
+ // -----------------------------------------
+
+ // To convert, let's first reset bits 12-14 and 0-6 using ~0x707f
+ // Then modify the opcode to ADDI (0010011)
+ // All other fields will remain same.
+
+ *(UINT32 *)Targ = ((*(UINT32 *)Targ & ~0x707f) | 0x13);
+ } else {
+ *(UINT32 *)Targ = (RV_X(Value, 0, 12) << 20) | (RV_X(*(UINT32*)Targ, 0, 20));
+ }
+ *(UINT32 *)mRiscVPass1Targ = (RV_X(Value2, 0, 20)<<12) | (RV_X(*(UINT32 *)mRiscVPass1Targ, 0, 12));
+ }
+ mRiscVPass1Sym = NULL;
+ mRiscVPass1Targ = NULL;
+ mRiscVPass1SymSecIndex = 0;
+ mRiscVPass1Offset = 0;
+ mRiscVPass1GotFixup = 0;
+ break;
+
+ case R_RISCV_ADD64:
+ case R_RISCV_SUB64:
+ case R_RISCV_ADD32:
+ case R_RISCV_SUB32:
+ case R_RISCV_BRANCH:
+ case R_RISCV_JAL:
+ case R_RISCV_GPREL_I:
+ case R_RISCV_GPREL_S:
+ case R_RISCV_CALL:
+ case R_RISCV_CALL_PLT:
+ case R_RISCV_RVC_BRANCH:
+ case R_RISCV_RVC_JUMP:
+ case R_RISCV_RELAX:
+ case R_RISCV_SUB6:
+ case R_RISCV_SET6:
+ case R_RISCV_SET8:
+ case R_RISCV_SET16:
+ case R_RISCV_SET32:
+ break;
+
+ default:
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_RISCV64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
+ }
+}
+
+STATIC UINT16 mDllCharacteristicsEx;
+
+STATIC
+VOID
+ParseNoteSection (
+ CONST Elf_Shdr *Shdr
+ )
+{
+ CONST Elf_Note *Note;
+ CONST UINT32 *Prop;
+ UINT32 Prop0;
+ UINT32 Prop2;
+
+ Note = (Elf_Note *)((UINT8 *)mEhdr + Shdr->sh_offset);
+
+ if ((Note->n_type == NT_GNU_PROPERTY_TYPE_0) &&
+ (Note->n_namesz == sizeof ("GNU")) &&
+ (strcmp ((CHAR8 *)(Note + 1), "GNU") == 0) &&
+ (Note->n_descsz > sizeof (UINT32[2]))) {
+ Prop = (UINT32 *)((UINT8 *)(Note + 1) + sizeof("GNU"));
+
+ switch (mEhdr->e_machine) {
+ case EM_AARCH64:
+ Prop0 = GNU_PROPERTY_AARCH64_FEATURE_1_AND;
+ Prop2 = GNU_PROPERTY_AARCH64_FEATURE_1_BTI;
+ break;
+
+ case EM_X86_64:
+ Prop0 = GNU_PROPERTY_X86_FEATURE_1_AND;
+ Prop2 = GNU_PROPERTY_X86_FEATURE_1_IBT;
+ break;
+
+ default:
+ return;
+ }
+ if ((Prop[0] == Prop0) &&
+ (Prop[1] >= sizeof (UINT32)) &&
+ ((Prop[2] & Prop2) != 0)) {
+ mDllCharacteristicsEx |= EFI_IMAGE_DLLCHARACTERISTICS_EX_FORWARD_CFI_COMPAT;
+ }
+ }
+}
+
+//
+// Elf functions interface implementation
+//
+
+STATIC
+VOID
+ScanSections64 (
+ VOID
+ )
+{
+ UINT32 i;
+ EFI_IMAGE_DOS_HEADER *DosHdr;
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
+ UINT32 CoffEntry;
+ UINT32 SectionCount;
+ BOOLEAN FoundSection;
+ UINT32 Offset;
+
+ CoffEntry = 0;
+ mCoffOffset = 0;
+
+ //
+ // Coff file start with a DOS header.
+ //
+ mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;
+ mNtHdrOffset = mCoffOffset;
+ switch (mEhdr->e_machine) {
+ case EM_X86_64:
+ case EM_AARCH64:
+ case EM_RISCV64:
+ case EM_LOONGARCH:
+ mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);
+ break;
+ default:
+ VerboseMsg ("%s unknown e_machine type %hu. Assume X64", mInImageName, mEhdr->e_machine);
+ mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);
+ break;
+ }
+
+ mTableOffset = mCoffOffset;
+ mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);
+
+ //
+ // Set mCoffAlignment to the maximum alignment of the input sections
+ // we care about
+ //
+ for (i = 0; i < mEhdr->e_shnum; i++) {
+ Elf_Shdr *shdr = GetShdrByIndex(i);
+ if (shdr->sh_addralign <= mCoffAlignment) {
+ continue;
+ }
+ if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {
+ mCoffAlignment = (UINT32)shdr->sh_addralign;
+ }
+ }
+
+ for (i = 0; i < mEhdr->e_shnum; i++) {
+ Elf_Shdr *shdr = GetShdrByIndex(i);
+ if (shdr->sh_type == SHT_NOTE) {
+ ParseNoteSection (shdr);
+ }
+ }
+
+ //
+ // Check if mCoffAlignment is larger than MAX_COFF_ALIGNMENT
+ //
+ if (mCoffAlignment > MAX_COFF_ALIGNMENT) {
+ Error (NULL, 0, 3000, "Invalid", "Section alignment is larger than MAX_COFF_ALIGNMENT.");
+ assert (FALSE);
+ }
+
+
+ //
+ // Move the PE/COFF header right before the first section. This will help us
+ // save space when converting to TE.
+ //
+ if (mCoffAlignment > mCoffOffset) {
+ mNtHdrOffset += mCoffAlignment - mCoffOffset;
+ mTableOffset += mCoffAlignment - mCoffOffset;
+ mCoffOffset = mCoffAlignment;
+ }
+
+ //
+ // First text sections.
+ //
+ mCoffOffset = CoffAlign(mCoffOffset);
+ mTextOffset = mCoffOffset;
+ FoundSection = FALSE;
+ SectionCount = 0;
+ for (i = 0; i < mEhdr->e_shnum; i++) {
+ Elf_Shdr *shdr = GetShdrByIndex(i);
+ if (IsTextShdr(shdr)) {
+ if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
+ // the alignment field is valid
+ if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
+ // if the section address is aligned we must align PE/COFF
+ mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));
+ } else {
+ Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
+ }
+ }
+
+ /* Relocate entry. */
+ if ((mEhdr->e_entry >= shdr->sh_addr) &&
+ (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {
+ CoffEntry = (UINT32) (mCoffOffset + mEhdr->e_entry - shdr->sh_addr);
+ }
+
+ //
+ // Set mTextOffset with the offset of the first '.text' section
+ //
+ if (!FoundSection) {
+ mTextOffset = mCoffOffset;
+ FoundSection = TRUE;
+ }
+
+ mCoffSectionsOffset[i] = mCoffOffset;
+ mCoffOffset += (UINT32) shdr->sh_size;
+ SectionCount ++;
+ }
+ }
+
+ if (!FoundSection && mOutImageType != FW_ACPI_IMAGE) {
+ Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");
+ assert (FALSE);
+ }
+
+ mDebugOffset = DebugRvaAlign(mCoffOffset);
+ mCoffOffset = CoffAlign(mCoffOffset);
+
+ if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
+ Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);
+ }
+
+ //
+ // Then data sections.
+ //
+ mDataOffset = mCoffOffset;
+ FoundSection = FALSE;
+ SectionCount = 0;
+ for (i = 0; i < mEhdr->e_shnum; i++) {
+ Elf_Shdr *shdr = GetShdrByIndex(i);
+ if (IsDataShdr(shdr)) {
+ if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
+ // the alignment field is valid
+ if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
+ // if the section address is aligned we must align PE/COFF
+ mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));
+ } else {
+ Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
+ }
+ }
+
+ //
+ // Set mDataOffset with the offset of the first '.data' section
+ //
+ if (!FoundSection) {
+ mDataOffset = mCoffOffset;
+ FoundSection = TRUE;
+ }
+ mCoffSectionsOffset[i] = mCoffOffset;
+ mCoffOffset += (UINT32) shdr->sh_size;
+ SectionCount ++;
+ }
+ }
+
+ //
+ // Make room for .debug data in .data (or .text if .data is empty) instead of
+ // putting it in a section of its own. This is explicitly allowed by the
+ // PE/COFF spec, and prevents bloat in the binary when using large values for
+ // section alignment.
+ //
+ if (SectionCount > 0) {
+ mDebugOffset = DebugRvaAlign(mCoffOffset);
+ }
+ mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +
+ sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +
+ strlen(mInImageName) + 1;
+
+ //
+ // Add more space in the .debug data region for the DllCharacteristicsEx
+ // field.
+ //
+ if (mDllCharacteristicsEx != 0) {
+ mCoffOffset = DebugRvaAlign(mCoffOffset) +
+ sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +
+ sizeof (EFI_IMAGE_DEBUG_EX_DLLCHARACTERISTICS_ENTRY);
+ }
+
+ mCoffOffset = CoffAlign(mCoffOffset);
+ if (SectionCount == 0) {
+ mDataOffset = mCoffOffset;
+ }
+
+ if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
+ Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);
+ }
+
+ //
+ // The Symbol sections.
+ //
+ if (mExportFlag) {
+ UINT32 SymIndex;
+ Elf_Sym *Sym;
+ UINT64 SymNum;
+ const UINT8 *SymName;
+
+ mExportOffset = mCoffOffset;
+ mExportSize = sizeof(EFI_IMAGE_EXPORT_DIRECTORY) + strlen(mInImageName) + 1;
+
+ for (i = 0; i < mEhdr->e_shnum; i++) {
+
+ //
+ // Determine if this is a symbol section.
+ //
+ Elf_Shdr *shdr = GetShdrByIndex(i);
+ if (!IsSymbolShdr(shdr)) {
+ continue;
+ }
+
+ UINT8 *Symtab = (UINT8*)mEhdr + shdr->sh_offset;
+ SymNum = (shdr->sh_size) / (shdr->sh_entsize);
+
+ //
+ // First Get PrmModuleExportDescriptor
+ //
+ for (SymIndex = 0; SymIndex < SymNum; SymIndex++) {
+ Sym = (Elf_Sym *)(Symtab + SymIndex * shdr->sh_entsize);
+ SymName = GetSymName(Sym);
+ if (SymName == NULL) {
+ continue;
+ }
+
+ if (strcmp((CHAR8*)SymName, PRM_MODULE_EXPORT_DESCRIPTOR_NAME) == 0) {
+ //
+ // Find PrmHandler Number and Name
+ //
+ FindPrmHandler(Sym->st_value);
+
+ strcpy(mExportSymName[mExportSymNum], (CHAR8*)SymName);
+ mExportRVA[mExportSymNum] = (UINT32)(Sym->st_value);
+ mExportSize += 2 * EFI_IMAGE_EXPORT_ADDR_SIZE + EFI_IMAGE_EXPORT_ORDINAL_SIZE + strlen((CHAR8 *)SymName) + 1;
+ mExportSymNum ++;
+ break;
+ }
+ }
+
+ //
+ // Second Get PrmHandler
+ //
+ for (SymIndex = 0; SymIndex < SymNum; SymIndex++) {
+ UINT32 ExpIndex;
+ Sym = (Elf_Sym *)(Symtab + SymIndex * shdr->sh_entsize);
+ SymName = GetSymName(Sym);
+ if (SymName == NULL) {
+ continue;
+ }
+
+ for (ExpIndex = 0; ExpIndex < (mExportSymNum -1); ExpIndex++) {
+ if (strcmp((CHAR8*)SymName, mExportSymName[ExpIndex]) != 0) {
+ continue;
+ }
+ mExportRVA[ExpIndex] = (UINT32)(Sym->st_value);
+ mExportSize += 2 * EFI_IMAGE_EXPORT_ADDR_SIZE + EFI_IMAGE_EXPORT_ORDINAL_SIZE + strlen((CHAR8 *)SymName) + 1;
+ }
+ }
+
+ break;
+ }
+
+ mCoffOffset += mExportSize;
+ mCoffOffset = CoffAlign(mCoffOffset);
+ }
+
+ //
+ // The HII resource sections.
+ //
+ mHiiRsrcOffset = mCoffOffset;
+ for (i = 0; i < mEhdr->e_shnum; i++) {
+ Elf_Shdr *shdr = GetShdrByIndex(i);
+ if (IsHiiRsrcShdr(shdr)) {
+ if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
+ // the alignment field is valid
+ if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
+ // if the section address is aligned we must align PE/COFF
+ mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));
+ } else {
+ Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
+ }
+ }
+ if (shdr->sh_size != 0) {
+ mHiiRsrcOffset = mCoffOffset;
+ mCoffSectionsOffset[i] = mCoffOffset;
+ mCoffOffset += (UINT32) shdr->sh_size;
+ mCoffOffset = CoffAlign(mCoffOffset);
+ SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);
+ }
+ break;
+ }
+ }
+
+ mRelocOffset = mCoffOffset;
+
+ //
+ // Allocate base Coff file. Will be expanded later for relocations.
+ //
+ mCoffFile = (UINT8 *)malloc(mCoffOffset);
+ if (mCoffFile == NULL) {
+ Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
+ }
+ assert (mCoffFile != NULL);
+ memset(mCoffFile, 0, mCoffOffset);
+
+ //
+ // Fill headers.
+ //
+ DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;
+ DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;
+ DosHdr->e_lfanew = mNtHdrOffset;
+
+ NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);
+
+ NtHdr->Pe32Plus.Signature = EFI_IMAGE_NT_SIGNATURE;
+
+ switch (mEhdr->e_machine) {
+ case EM_X86_64:
+ NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_X64;
+ NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
+ break;
+ case EM_AARCH64:
+ NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_ARM64;
+ NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
+ break;
+ case EM_RISCV64:
+ NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_RISCV64;
+ NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
+ break;
+ case EM_LOONGARCH:
+ NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_LOONGARCH64;
+ NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
+ break;
+
+ default:
+ VerboseMsg ("%u unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine);
+ NtHdr->Pe32Plus.FileHeader.Machine = IMAGE_FILE_MACHINE_X64;
+ NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
+ }
+
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections = mCoffNbrSections;
+ NtHdr->Pe32Plus.FileHeader.TimeDateStamp = (UINT32) time(NULL);
+ mImageTimeStamp = NtHdr->Pe32Plus.FileHeader.TimeDateStamp;
+ NtHdr->Pe32Plus.FileHeader.PointerToSymbolTable = 0;
+ NtHdr->Pe32Plus.FileHeader.NumberOfSymbols = 0;
+ NtHdr->Pe32Plus.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32Plus.OptionalHeader);
+ NtHdr->Pe32Plus.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE
+ | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED
+ | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED
+ | EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE;
+
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfUninitializedData = 0;
+ NtHdr->Pe32Plus.OptionalHeader.AddressOfEntryPoint = CoffEntry;
+
+ NtHdr->Pe32Plus.OptionalHeader.BaseOfCode = mTextOffset;
+
+ NtHdr->Pe32Plus.OptionalHeader.ImageBase = 0;
+ NtHdr->Pe32Plus.OptionalHeader.SectionAlignment = mCoffAlignment;
+ NtHdr->Pe32Plus.OptionalHeader.FileAlignment = mCoffAlignment;
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = 0;
+
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfHeaders = mTextOffset;
+ NtHdr->Pe32Plus.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;
+
+ //
+ // Section headers.
+ //
+ if ((mDataOffset - mTextOffset) > 0) {
+ CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,
+ EFI_IMAGE_SCN_CNT_CODE
+ | EFI_IMAGE_SCN_MEM_EXECUTE
+ | EFI_IMAGE_SCN_MEM_READ);
+ } else {
+ // Don't make a section of size 0.
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
+ }
+
+ //
+ // If found symbol, add edata section between data and rsrc section
+ //
+ if(mExportFlag) {
+ Offset = mExportOffset;
+ } else {
+ Offset = mHiiRsrcOffset;
+ }
+
+ if ((mHiiRsrcOffset - mDataOffset) > 0) {
+ CreateSectionHeader (".data", mDataOffset, Offset - mDataOffset,
+ EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
+ | EFI_IMAGE_SCN_MEM_WRITE
+ | EFI_IMAGE_SCN_MEM_READ);
+ } else {
+ // Don't make a section of size 0.
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
+ }
+
+ if(mExportFlag) {
+ if ((mHiiRsrcOffset - mExportOffset) > 0) {
+ CreateSectionHeader (".edata", mExportOffset, mHiiRsrcOffset - mExportOffset,
+ EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
+ | EFI_IMAGE_SCN_MEM_READ);
+ NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_EXPORT].Size = mHiiRsrcOffset - mExportOffset;
+ NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress = mExportOffset;
+
+ } else {
+ // Don't make a section of size 0.
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
+ }
+ }
+
+ if ((mRelocOffset - mHiiRsrcOffset) > 0) {
+ CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,
+ EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
+ | EFI_IMAGE_SCN_MEM_READ);
+
+ NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;
+ NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;
+ } else {
+ // Don't make a section of size 0.
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
+ }
+
+}
+
+STATIC
+BOOLEAN
+WriteSections64 (
+ SECTION_FILTER_TYPES FilterType
+ )
+{
+ UINT32 Idx;
+ Elf_Shdr *SecShdr;
+ UINT32 SecOffset;
+ BOOLEAN (*Filter)(Elf_Shdr *);
+ Elf64_Addr GOTEntryRva;
+
+ //
+ // Initialize filter pointer
+ //
+ switch (FilterType) {
+ case SECTION_TEXT:
+ Filter = IsTextShdr;
+ break;
+ case SECTION_HII:
+ Filter = IsHiiRsrcShdr;
+ break;
+ case SECTION_DATA:
+ Filter = IsDataShdr;
+ break;
+ default:
+ return FALSE;
+ }
+
+ //
+ // First: copy sections.
+ //
+ for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
+ Elf_Shdr *Shdr = GetShdrByIndex(Idx);
+ if ((*Filter)(Shdr)) {
+ switch (Shdr->sh_type) {
+ case SHT_PROGBITS:
+ /* Copy. */
+ if (Shdr->sh_offset + Shdr->sh_size > mFileBufferSize) {
+ return FALSE;
+ }
+ memcpy(mCoffFile + mCoffSectionsOffset[Idx],
+ (UINT8*)mEhdr + Shdr->sh_offset,
+ (size_t) Shdr->sh_size);
+ break;
+
+ case SHT_NOBITS:
+ memset(mCoffFile + mCoffSectionsOffset[Idx], 0, (size_t) Shdr->sh_size);
+ break;
+
+ default:
+ //
+ // Ignore for unknown section type.
+ //
+ VerboseMsg ("%s unknown section type %x. We ignore this unknown section type.", mInImageName, (unsigned)Shdr->sh_type);
+ break;
+ }
+ }
+ }
+
+ //
+ // Second: apply relocations.
+ //
+ VerboseMsg ("Applying Relocations...");
+ for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
+ //
+ // Determine if this is a relocation section.
+ //
+ Elf_Shdr *RelShdr = GetShdrByIndex(Idx);
+ if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
+ continue;
+ }
+
+ //
+ // If this is a ET_DYN (PIE) executable, we will encounter a dynamic SHT_RELA
+ // section that applies to the entire binary, and which will have its section
+ // index set to #0 (which is a NULL section with the SHF_ALLOC bit cleared).
+ //
+ // In the absence of GOT based relocations,
+ // this RELA section will contain redundant R_xxx_RELATIVE relocations, one
+ // for every R_xxx_xx64 relocation appearing in the per-section RELA sections.
+ // (i.e., .rela.text and .rela.data)
+ //
+ if (RelShdr->sh_info == 0) {
+ continue;
+ }
+
+ //
+ // Relocation section found. Now extract section information that the relocations
+ // apply to in the ELF data and the new COFF data.
+ //
+ SecShdr = GetShdrByIndex(RelShdr->sh_info);
+ SecOffset = mCoffSectionsOffset[RelShdr->sh_info];
+
+ //
+ // Only process relocations for the current filter type.
+ //
+ if (RelShdr->sh_type == SHT_RELA && (*Filter)(SecShdr)) {
+ UINT64 RelIdx;
+
+ //
+ // Determine the symbol table referenced by the relocation data.
+ //
+ Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);
+ UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;
+
+ //
+ // Process all relocation entries for this section.
+ //
+ for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += (UINT32) RelShdr->sh_entsize) {
+
+ //
+ // Set pointer to relocation entry
+ //
+ Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
+
+ //
+ // Set pointer to symbol table entry associated with the relocation entry.
+ //
+ Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);
+
+ Elf_Shdr *SymShdr;
+ UINT8 *Targ;
+
+ //
+ // The _GLOBAL_OFFSET_TABLE_ symbol is not actually an absolute symbol,
+ // but carries the SHN_ABS section index for historical reasons.
+ // It must be accompanied by a R_*_GOT_* type relocation on a
+ // subsequent instruction, which we handle below, specifically to avoid
+ // the GOT indirection, and to refer to the symbol directly. This means
+ // we can simply disregard direct references to the GOT symbol itself,
+ // as the resulting value will never be used.
+ //
+ if (Sym->st_shndx == SHN_ABS) {
+ const UINT8 *SymName = GetSymName (Sym);
+ if (strcmp ((CHAR8 *)SymName, "_GLOBAL_OFFSET_TABLE_") == 0) {
+ continue;
+ }
+ }
+
+ //
+ // Check section header index found in symbol table and get the section
+ // header location.
+ //
+ if (Sym->st_shndx == SHN_UNDEF
+ || Sym->st_shndx >= mEhdr->e_shnum) {
+ const UINT8 *SymName = GetSymName(Sym);
+ if (SymName == NULL) {
+ SymName = (const UINT8 *)"<unknown>";
+ }
+
+ //
+ // Skip error on EM_RISCV64 and EM_LOONGARCH because no symbol name is built
+ // from RISC-V and LoongArch toolchain.
+ //
+ if ((mEhdr->e_machine != EM_RISCV64) && (mEhdr->e_machine != EM_LOONGARCH)) {
+ Error (NULL, 0, 3000, "Invalid",
+ "%s: Bad definition for symbol '%s'@%#llx or unsupported symbol type. "
+ "For example, absolute and undefined symbols are not supported.",
+ mInImageName, SymName, Sym->st_value);
+
+ exit(EXIT_FAILURE);
+ }
+ continue;
+ }
+ SymShdr = GetShdrByIndex(Sym->st_shndx);
+
+ //
+ // Convert the relocation data to a pointer into the coff file.
+ //
+ // Note:
+ // r_offset is the virtual address of the storage unit to be relocated.
+ // sh_addr is the virtual address for the base of the section.
+ //
+ // r_offset in a memory address.
+ // Convert it to a pointer in the coff file.
+ //
+ Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);
+
+ //
+ // Determine how to handle each relocation type based on the machine type.
+ //
+ if (mEhdr->e_machine == EM_X86_64) {
+ switch (ELF_R_TYPE(Rel->r_info)) {
+ case R_X86_64_NONE:
+ break;
+ case R_X86_64_64:
+ //
+ // Absolute relocation.
+ //
+ VerboseMsg ("R_X86_64_64");
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX",
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
+ *(UINT64 *)Targ);
+ *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
+ VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ);
+ break;
+ case R_X86_64_32:
+ VerboseMsg ("R_X86_64_32");
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
+ *(UINT32 *)Targ);
+ *(UINT32 *)Targ = (UINT32)((UINT64)(*(UINT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
+ VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ);
+ break;
+ case R_X86_64_32S:
+ VerboseMsg ("R_X86_64_32S");
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
+ *(UINT32 *)Targ);
+ *(INT32 *)Targ = (INT32)((INT64)(*(INT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
+ VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ);
+ break;
+
+ case R_X86_64_PLT32:
+ //
+ // Treat R_X86_64_PLT32 relocations as R_X86_64_PC32: this is
+ // possible since we know all code symbol references resolve to
+ // definitions in the same module (UEFI has no shared libraries),
+ // and so there is never a reason to jump via a PLT entry,
+ // allowing us to resolve the reference using the symbol directly.
+ //
+ VerboseMsg ("Treating R_X86_64_PLT32 as R_X86_64_PC32 ...");
+ /* fall through */
+ case R_X86_64_PC32:
+ //
+ // Relative relocation: Symbol - Ip + Addend
+ //
+ VerboseMsg ("R_X86_64_PC32");
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
+ *(UINT32 *)Targ);
+ *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ
+ + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)
+ - (SecOffset - SecShdr->sh_addr));
+ VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ);
+ break;
+ case R_X86_64_GOTPCREL:
+ case R_X86_64_GOTPCRELX:
+ case R_X86_64_REX_GOTPCRELX:
+ VerboseMsg ("R_X86_64_GOTPCREL family");
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
+ *(UINT32 *)Targ);
+ GOTEntryRva = Rel->r_offset - Rel->r_addend + *(INT32 *)Targ;
+ FindElfGOTSectionFromGOTEntryElfRva(GOTEntryRva);
+ *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ
+ + (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr)
+ - (SecOffset - SecShdr->sh_addr));
+ VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ);
+ GOTEntryRva += (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr); // ELF Rva -> COFF Rva
+ if (AccumulateCoffGOTEntries((UINT32)GOTEntryRva)) {
+ //
+ // Relocate GOT entry if it's the first time we run into it
+ //
+ Targ = mCoffFile + GOTEntryRva;
+ //
+ // Limitation: The following three statements assume memory
+ // at *Targ is valid because the section containing the GOT
+ // has already been copied from the ELF image to the Coff image.
+ // This pre-condition presently holds because the GOT is placed
+ // in section .text, and the ELF text sections are all copied
+ // prior to reaching this point.
+ // If the pre-condition is violated in the future, this fixup
+ // either needs to be deferred after the GOT section is copied
+ // to the Coff image, or the fixup should be performed on the
+ // source Elf image instead of the destination Coff image.
+ //
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX",
+ (UINT32)GOTEntryRva,
+ *(UINT64 *)Targ);
+ *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
+ VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ);
+ }
+ break;
+ default:
+ Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
+ }
+ } else if (mEhdr->e_machine == EM_AARCH64) {
+
+ switch (ELF_R_TYPE(Rel->r_info)) {
+ INT64 Offset;
+
+ case R_AARCH64_LD64_GOTOFF_LO15:
+ case R_AARCH64_LD64_GOTPAGE_LO15:
+ //
+ // Convert into an ADR instruction that refers to the symbol directly.
+ //
+ Offset = Sym->st_value - Rel->r_offset;
+
+ *(UINT32 *)Targ &= 0x1000001f;
+ *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);
+
+ if (Offset < -0x100000 || Offset > 0xfffff) {
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s failed to relax GOT based symbol reference - image is too big (>1 MiB).",
+ mInImageName);
+ break;
+ }
+ break;
+
+ case R_AARCH64_LD64_GOT_LO12_NC:
+ //
+ // Convert into an ADD instruction - see R_AARCH64_ADR_GOT_PAGE below.
+ //
+ *(UINT32 *)Targ &= 0x3ff;
+ *(UINT32 *)Targ |= 0x91000000 | ((Sym->st_value & 0xfff) << 10);
+ break;
+
+ case R_AARCH64_ADR_GOT_PAGE:
+ //
+ // This relocation points to the GOT entry that contains the absolute
+ // address of the symbol we are referring to. Since EDK2 only uses
+ // fully linked binaries, we can avoid the indirection, and simply
+ // refer to the symbol directly. This implies having to patch the
+ // subsequent LDR instruction (covered by a R_AARCH64_LD64_GOT_LO12_NC
+ // relocation) into an ADD instruction - this is handled above.
+ //
+ // In order to handle Cortex-A53 erratum #843419, the GCC toolchain
+ // may convert an ADRP instruction at the end of a page (0xffc
+ // offset) into an ADR instruction. If so, be sure to calculate the
+ // offset for an ADR instead of ADRP.
+ //
+ if ((*(UINT32 *)Targ & BIT31) == 0) {
+ //
+ // Calculate the offset for an ADR.
+ //
+ Offset = (Sym->st_value & ~0xfff) - Rel->r_offset;
+ if (Offset < -0x100000 || Offset > 0xfffff) {
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s due to its size (> 1 MB), unable to relocate ADR.",
+ mInImageName);
+ break;
+ }
+ } else {
+ //
+ // Calculate the offset for an ADRP.
+ //
+ Offset = (Sym->st_value - (Rel->r_offset & ~0xfff)) >> 12;
+ }
+
+ *(UINT32 *)Targ &= 0x9000001f;
+ *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);
+
+ /* fall through */
+
+ case R_AARCH64_ADR_PREL_PG_HI21:
+ //
+ // In order to handle Cortex-A53 erratum #843419, the LD linker may
+ // convert ADRP instructions into ADR instructions, but without
+ // updating the static relocation type, and so we may end up here
+ // while the instruction in question is actually ADR. So let's
+ // just disregard it: the section offset check we apply below to
+ // ADR instructions will trigger for its R_AARCH64_xxx_ABS_LO12_NC
+ // companion instruction as well, so it is safe to omit it here.
+ //
+ if ((*(UINT32 *)Targ & BIT31) == 0) {
+ break;
+ }
+
+ //
+ // AArch64 PG_H21 relocations are typically paired with ABS_LO12
+ // relocations, where a PC-relative reference with +/- 4 GB range is
+ // split into a relative high part and an absolute low part. Since
+ // the absolute low part represents the offset into a 4 KB page, we
+ // either have to convert the ADRP into an ADR instruction, or we
+ // need to use a section alignment of at least 4 KB, so that the
+ // binary appears at a correct offset at runtime. In any case, we
+ // have to make sure that the 4 KB relative offsets of both the
+ // section containing the reference as well as the section to which
+ // it refers have not been changed during PE/COFF conversion (i.e.,
+ // in ScanSections64() above).
+ //
+ if (mCoffAlignment < 0x1000) {
+ //
+ // Attempt to convert the ADRP into an ADR instruction.
+ // This is only possible if the symbol is within +/- 1 MB.
+ //
+
+ // Decode the ADRP instruction
+ Offset = (INT32)((*(UINT32 *)Targ & 0xffffe0) << 8);
+ Offset = (Offset << (6 - 5)) | ((*(UINT32 *)Targ & 0x60000000) >> (29 - 12));
+
+ //
+ // ADRP offset is relative to the previous page boundary,
+ // whereas ADR offset is relative to the instruction itself.
+ // So fix up the offset so it points to the page containing
+ // the symbol.
+ //
+ Offset -= (UINTN)(Targ - mCoffFile) & 0xfff;
+
+ if (Offset < -0x100000 || Offset > 0xfffff) {
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s due to its size (> 1 MB), this module requires 4 KB section alignment.",
+ mInImageName);
+ break;
+ }
+
+ // Re-encode the offset as an ADR instruction
+ *(UINT32 *)Targ &= 0x1000001f;
+ *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);
+ }
+ /* fall through */
+
+ case R_AARCH64_ADD_ABS_LO12_NC:
+ case R_AARCH64_LDST8_ABS_LO12_NC:
+ case R_AARCH64_LDST16_ABS_LO12_NC:
+ case R_AARCH64_LDST32_ABS_LO12_NC:
+ case R_AARCH64_LDST64_ABS_LO12_NC:
+ case R_AARCH64_LDST128_ABS_LO12_NC:
+ if (((SecShdr->sh_addr ^ SecOffset) & 0xfff) != 0 ||
+ ((SymShdr->sh_addr ^ mCoffSectionsOffset[Sym->st_shndx]) & 0xfff) != 0) {
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 small code model requires identical ELF and PE/COFF section offsets modulo 4 KB.",
+ mInImageName);
+ break;
+ }
+ /* fall through */
+
+ case R_AARCH64_ADR_PREL_LO21:
+ case R_AARCH64_CONDBR19:
+ case R_AARCH64_LD_PREL_LO19:
+ case R_AARCH64_CALL26:
+ case R_AARCH64_JUMP26:
+ case R_AARCH64_PREL64:
+ case R_AARCH64_PREL32:
+ case R_AARCH64_PREL16:
+ //
+ // The GCC toolchains (i.e., binutils) may corrupt section relative
+ // relocations when emitting relocation sections into fully linked
+ // binaries. More specifically, they tend to fail to take into
+ // account the fact that a '.rodata + XXX' relocation needs to have
+ // its addend recalculated once .rodata is merged into the .text
+ // section, and the relocation emitted into the .rela.text section.
+ //
+ // We cannot really recover from this loss of information, so the
+ // only workaround is to prevent having to recalculate any relative
+ // relocations at all, by using a linker script that ensures that
+ // the offset between the Place and the Symbol is the same in both
+ // the ELF and the PE/COFF versions of the binary.
+ //
+ if ((SymShdr->sh_addr - SecShdr->sh_addr) !=
+ (mCoffSectionsOffset[Sym->st_shndx] - SecOffset)) {
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 relative relocations require identical ELF and PE/COFF section offsets",
+ mInImageName);
+ }
+ break;
+
+ // Absolute relocations.
+ case R_AARCH64_ABS64:
+ *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
+ break;
+
+ default:
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
+ }
+ } else if (mEhdr->e_machine == EM_RISCV64) {
+ //
+ // Write section for RISC-V 64 architecture.
+ //
+ WriteSectionRiscV64 (Rel, Targ, SymShdr, Sym);
+ } else if (mEhdr->e_machine == EM_LOONGARCH) {
+ switch (ELF_R_TYPE(Rel->r_info)) {
+ INT64 Offset;
+ INT32 Lo, Hi;
+
+ case R_LARCH_SOP_PUSH_ABSOLUTE:
+ //
+ // Absolute relocation.
+ //
+ *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
+ break;
+
+ case R_LARCH_MARK_LA:
+ case R_LARCH_64:
+ case R_LARCH_NONE:
+ case R_LARCH_32:
+ case R_LARCH_RELATIVE:
+ case R_LARCH_COPY:
+ case R_LARCH_JUMP_SLOT:
+ case R_LARCH_TLS_DTPMOD32:
+ case R_LARCH_TLS_DTPMOD64:
+ case R_LARCH_TLS_DTPREL32:
+ case R_LARCH_TLS_DTPREL64:
+ case R_LARCH_TLS_TPREL32:
+ case R_LARCH_TLS_TPREL64:
+ case R_LARCH_IRELATIVE:
+ case R_LARCH_MARK_PCREL:
+ case R_LARCH_SOP_PUSH_PCREL:
+ case R_LARCH_SOP_PUSH_DUP:
+ case R_LARCH_SOP_PUSH_GPREL:
+ case R_LARCH_SOP_PUSH_TLS_TPREL:
+ case R_LARCH_SOP_PUSH_TLS_GOT:
+ case R_LARCH_SOP_PUSH_TLS_GD:
+ case R_LARCH_SOP_PUSH_PLT_PCREL:
+ case R_LARCH_SOP_ASSERT:
+ case R_LARCH_SOP_NOT:
+ case R_LARCH_SOP_SUB:
+ case R_LARCH_SOP_SL:
+ case R_LARCH_SOP_SR:
+ case R_LARCH_SOP_ADD:
+ case R_LARCH_SOP_AND:
+ case R_LARCH_SOP_IF_ELSE:
+ case R_LARCH_SOP_POP_32_S_10_5:
+ case R_LARCH_SOP_POP_32_U_10_12:
+ case R_LARCH_SOP_POP_32_S_10_12:
+ case R_LARCH_SOP_POP_32_S_10_16:
+ case R_LARCH_SOP_POP_32_S_10_16_S2:
+ case R_LARCH_SOP_POP_32_S_5_20:
+ case R_LARCH_SOP_POP_32_S_0_5_10_16_S2:
+ case R_LARCH_SOP_POP_32_S_0_10_10_16_S2:
+ case R_LARCH_SOP_POP_32_U:
+ case R_LARCH_ADD8:
+ case R_LARCH_ADD16:
+ case R_LARCH_ADD24:
+ case R_LARCH_ADD32:
+ case R_LARCH_ADD64:
+ case R_LARCH_SUB8:
+ case R_LARCH_SUB16:
+ case R_LARCH_SUB24:
+ case R_LARCH_SUB32:
+ case R_LARCH_SUB64:
+ case R_LARCH_GNU_VTINHERIT:
+ case R_LARCH_GNU_VTENTRY:
+ case R_LARCH_B16:
+ case R_LARCH_B21:
+ case R_LARCH_B26:
+ case R_LARCH_ABS_HI20:
+ case R_LARCH_ABS_LO12:
+ case R_LARCH_ABS64_LO20:
+ case R_LARCH_ABS64_HI12:
+ case R_LARCH_PCALA_LO12:
+ case R_LARCH_PCALA64_LO20:
+ case R_LARCH_PCALA64_HI12:
+ case R_LARCH_GOT_PC_LO12:
+ case R_LARCH_GOT64_PC_LO20:
+ case R_LARCH_GOT64_PC_HI12:
+ case R_LARCH_GOT64_HI20:
+ case R_LARCH_GOT64_LO12:
+ case R_LARCH_GOT64_LO20:
+ case R_LARCH_GOT64_HI12:
+ case R_LARCH_TLS_LE_HI20:
+ case R_LARCH_TLS_LE_LO12:
+ case R_LARCH_TLS_LE64_LO20:
+ case R_LARCH_TLS_LE64_HI12:
+ case R_LARCH_TLS_IE_PC_HI20:
+ case R_LARCH_TLS_IE_PC_LO12:
+ case R_LARCH_TLS_IE64_PC_LO20:
+ case R_LARCH_TLS_IE64_PC_HI12:
+ case R_LARCH_TLS_IE64_HI20:
+ case R_LARCH_TLS_IE64_LO12:
+ case R_LARCH_TLS_IE64_LO20:
+ case R_LARCH_TLS_IE64_HI12:
+ case R_LARCH_TLS_LD_PC_HI20:
+ case R_LARCH_TLS_LD64_HI20:
+ case R_LARCH_TLS_GD_PC_HI20:
+ case R_LARCH_TLS_GD64_HI20:
+ case R_LARCH_32_PCREL:
+ case R_LARCH_RELAX:
+ case R_LARCH_DELETE:
+ case R_LARCH_ALIGN:
+ case R_LARCH_PCREL20_S2:
+ case R_LARCH_CFA:
+ case R_LARCH_ADD6:
+ case R_LARCH_SUB6:
+ case R_LARCH_ADD_ULEB128:
+ case R_LARCH_SUB_ULEB128:
+ case R_LARCH_64_PCREL:
+ //
+ // These types are not used or do not require fixup.
+ //
+ break;
+
+ case R_LARCH_GOT_PC_HI20:
+ Offset = Sym->st_value - (UINTN)(Targ - mCoffFile);
+ if (Offset < 0) {
+ Offset = (UINTN)(Targ - mCoffFile) - Sym->st_value;
+ Hi = Offset & ~0xfff;
+ Lo = (INT32)((Offset & 0xfff) << 20) >> 20;
+ if ((Lo < 0) && (Lo > -2048)) {
+ Hi += 0x1000;
+ Lo = ~(0x1000 - Lo) + 1;
+ }
+ Hi = ~Hi + 1;
+ Lo = ~Lo + 1;
+ } else {
+ Hi = Offset & ~0xfff;
+ Lo = (INT32)((Offset & 0xfff) << 20) >> 20;
+ if (Lo < 0) {
+ Hi += 0x1000;
+ Lo = ~(0x1000 - Lo) + 1;
+ }
+ }
+ // Re-encode the offset as PCADDU12I + ADDI.D(Convert LD.D) instruction
+ *(UINT32 *)Targ &= 0x1f;
+ *(UINT32 *)Targ |= 0x1c000000;
+ *(UINT32 *)Targ |= (((Hi >> 12) & 0xfffff) << 5);
+ *(UINT32 *)(Targ + 4) &= 0x3ff;
+ *(UINT32 *)(Targ + 4) |= 0x2c00000 | ((Lo & 0xfff) << 10);
+ break;
+
+ //
+ // Attempt to convert instruction.
+ //
+ case R_LARCH_PCALA_HI20:
+ // Decode the PCALAU12I instruction and the instruction that following it.
+ Offset = ((INT32)((*(UINT32 *)Targ & 0x1ffffe0) << 7));
+ Offset += ((INT32)((*(UINT32 *)(Targ + 4) & 0x3ffc00) << 10) >> 20);
+ //
+ // PCALA offset is relative to the previous page boundary,
+ // whereas PCADD offset is relative to the instruction itself.
+ // So fix up the offset so it points to the page containing
+ // the symbol.
+ //
+ Offset -= (UINTN)(Targ - mCoffFile) & 0xfff;
+ if (Offset < 0) {
+ Offset = -Offset;
+ Hi = Offset & ~0xfff;
+ Lo = (INT32)((Offset & 0xfff) << 20) >> 20;
+ if ((Lo < 0) && (Lo > -2048)) {
+ Hi += 0x1000;
+ Lo = ~(0x1000 - Lo) + 1;
+ }
+ Hi = ~Hi + 1;
+ Lo = ~Lo + 1;
+ } else {
+ Hi = Offset & ~0xfff;
+ Lo = (INT32)((Offset & 0xfff) << 20) >> 20;
+ if (Lo < 0) {
+ Hi += 0x1000;
+ Lo = ~(0x1000 - Lo) + 1;
+ }
+ }
+ // Convert the first instruction from PCALAU12I to PCADDU12I and re-encode the offset into them.
+ *(UINT32 *)Targ &= 0x1f;
+ *(UINT32 *)Targ |= 0x1c000000;
+ *(UINT32 *)Targ |= (((Hi >> 12) & 0xfffff) << 5);
+ *(UINT32 *)(Targ + 4) &= 0xffc003ff;
+ *(UINT32 *)(Targ + 4) |= (Lo & 0xfff) << 10;
+ break;
+ default:
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_LOONGARCH relocation 0x%x.", mInImageName, (unsigned) ELF64_R_TYPE(Rel->r_info));
+ }
+ } else {
+ Error (NULL, 0, 3000, "Invalid", "Not a supported machine type");
+ }
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+STATIC
+VOID
+WriteRelocations64 (
+ VOID
+ )
+{
+ UINT32 Index;
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
+ EFI_IMAGE_DATA_DIRECTORY *Dir;
+ UINT32 RiscVRelType;
+
+ for (Index = 0; Index < mEhdr->e_shnum; Index++) {
+ Elf_Shdr *RelShdr = GetShdrByIndex(Index);
+ if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {
+ Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);
+ if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {
+ UINT64 RelIdx;
+
+ for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {
+ Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
+
+ if (mEhdr->e_machine == EM_X86_64) {
+ switch (ELF_R_TYPE(Rel->r_info)) {
+ case R_X86_64_NONE:
+ case R_X86_64_PC32:
+ case R_X86_64_PLT32:
+ case R_X86_64_GOTPCREL:
+ case R_X86_64_GOTPCRELX:
+ case R_X86_64_REX_GOTPCRELX:
+ break;
+ case R_X86_64_64:
+ VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08llX",
+ mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_DIR64);
+ break;
+ //
+ // R_X86_64_32 and R_X86_64_32S are ELF64 relocations emitted when using
+ // the SYSV X64 ABI small non-position-independent code model.
+ // R_X86_64_32 is used for unsigned 32-bit immediates with a 32-bit operand
+ // size. The value is either not extended, or zero-extended to 64 bits.
+ // R_X86_64_32S is used for either signed 32-bit non-rip-relative displacements
+ // or signed 32-bit immediates with a 64-bit operand size. The value is
+ // sign-extended to 64 bits.
+ // EFI_IMAGE_REL_BASED_HIGHLOW is a PE relocation that uses 32-bit arithmetic
+ // for rebasing an image.
+ // EFI PE binaries declare themselves EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE and
+ // may load above 2GB. If an EFI PE binary with a converted R_X86_64_32S
+ // relocation is loaded above 2GB, the value will get sign-extended to the
+ // negative part of the 64-bit address space. The negative part of the 64-bit
+ // address space is unmapped, so accessing such an address page-faults.
+ // In order to support R_X86_64_32S, it is necessary to unset
+ // EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE, and the EFI PE loader must implement
+ // this flag and abstain from loading such a PE binary above 2GB.
+ // Since this feature is not supported, support for R_X86_64_32S (and hence
+ // the small non-position-independent code model) is disabled.
+ //
+ // case R_X86_64_32S:
+ case R_X86_64_32:
+ VerboseMsg ("EFI_IMAGE_REL_BASED_HIGHLOW Offset: 0x%08llX",
+ mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_HIGHLOW);
+ break;
+ default:
+ Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
+ }
+ } else if (mEhdr->e_machine == EM_AARCH64) {
+
+ switch (ELF_R_TYPE(Rel->r_info)) {
+ case R_AARCH64_ADR_PREL_LO21:
+ case R_AARCH64_CONDBR19:
+ case R_AARCH64_LD_PREL_LO19:
+ case R_AARCH64_CALL26:
+ case R_AARCH64_JUMP26:
+ case R_AARCH64_PREL64:
+ case R_AARCH64_PREL32:
+ case R_AARCH64_PREL16:
+ case R_AARCH64_ADR_PREL_PG_HI21:
+ case R_AARCH64_ADD_ABS_LO12_NC:
+ case R_AARCH64_LDST8_ABS_LO12_NC:
+ case R_AARCH64_LDST16_ABS_LO12_NC:
+ case R_AARCH64_LDST32_ABS_LO12_NC:
+ case R_AARCH64_LDST64_ABS_LO12_NC:
+ case R_AARCH64_LDST128_ABS_LO12_NC:
+ case R_AARCH64_ADR_GOT_PAGE:
+ case R_AARCH64_LD64_GOT_LO12_NC:
+ case R_AARCH64_LD64_GOTOFF_LO15:
+ case R_AARCH64_LD64_GOTPAGE_LO15:
+ //
+ // No fixups are required for relative relocations, provided that
+ // the relative offsets between sections have been preserved in
+ // the ELF to PE/COFF conversion. We have already asserted that
+ // this is the case in WriteSections64 ().
+ //
+ break;
+
+ case R_AARCH64_ABS64:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_DIR64);
+ break;
+
+ case R_AARCH64_ABS32:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_HIGHLOW);
+ break;
+
+ default:
+ Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
+ }
+ } else if (mEhdr->e_machine == EM_RISCV64) {
+ RiscVRelType = ELF_R_TYPE(Rel->r_info);
+ switch (RiscVRelType) {
+ case R_RISCV_NONE:
+ break;
+
+ case R_RISCV_32:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_HIGHLOW);
+ break;
+
+ case R_RISCV_64:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_DIR64);
+ break;
+
+ case R_RISCV_HI20:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_RISCV_HI20);
+ break;
+
+ case R_RISCV_LO12_I:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_RISCV_LOW12I);
+ break;
+
+ case R_RISCV_LO12_S:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_RISCV_LOW12S);
+ break;
+
+ case R_RISCV_ADD64:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_ABSOLUTE);
+ break;
+
+ case R_RISCV_SUB64:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_ABSOLUTE);
+ break;
+
+ case R_RISCV_ADD32:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_ABSOLUTE);
+ break;
+
+ case R_RISCV_SUB32:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_ABSOLUTE);
+ break;
+
+ case R_RISCV_BRANCH:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_ABSOLUTE);
+ break;
+
+ case R_RISCV_JAL:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_ABSOLUTE);
+ break;
+
+ case R_RISCV_GPREL_I:
+ case R_RISCV_GPREL_S:
+ case R_RISCV_CALL:
+ case R_RISCV_CALL_PLT:
+ case R_RISCV_RVC_BRANCH:
+ case R_RISCV_RVC_JUMP:
+ case R_RISCV_RELAX:
+ case R_RISCV_SUB6:
+ case R_RISCV_SET6:
+ case R_RISCV_SET8:
+ case R_RISCV_SET16:
+ case R_RISCV_SET32:
+ case R_RISCV_PCREL_HI20:
+ case R_RISCV_GOT_HI20:
+ case R_RISCV_PCREL_LO12_I:
+ case R_RISCV_PCREL_LO12_S:
+ break;
+
+ default:
+ Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_RISCV64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
+ }
+ } else if (mEhdr->e_machine == EM_LOONGARCH) {
+ switch (ELF_R_TYPE(Rel->r_info)) {
+ case R_LARCH_MARK_LA:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_LOONGARCH64_MARK_LA);
+ break;
+ case R_LARCH_64:
+ CoffAddFixup(
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
+ + (Rel->r_offset - SecShdr->sh_addr)),
+ EFI_IMAGE_REL_BASED_DIR64);
+ break;
+ case R_LARCH_NONE:
+ case R_LARCH_32:
+ case R_LARCH_RELATIVE:
+ case R_LARCH_COPY:
+ case R_LARCH_JUMP_SLOT:
+ case R_LARCH_TLS_DTPMOD32:
+ case R_LARCH_TLS_DTPMOD64:
+ case R_LARCH_TLS_DTPREL32:
+ case R_LARCH_TLS_DTPREL64:
+ case R_LARCH_TLS_TPREL32:
+ case R_LARCH_TLS_TPREL64:
+ case R_LARCH_IRELATIVE:
+ case R_LARCH_MARK_PCREL:
+ case R_LARCH_SOP_PUSH_PCREL:
+ case R_LARCH_SOP_PUSH_ABSOLUTE:
+ case R_LARCH_SOP_PUSH_DUP:
+ case R_LARCH_SOP_PUSH_GPREL:
+ case R_LARCH_SOP_PUSH_TLS_TPREL:
+ case R_LARCH_SOP_PUSH_TLS_GOT:
+ case R_LARCH_SOP_PUSH_TLS_GD:
+ case R_LARCH_SOP_PUSH_PLT_PCREL:
+ case R_LARCH_SOP_ASSERT:
+ case R_LARCH_SOP_NOT:
+ case R_LARCH_SOP_SUB:
+ case R_LARCH_SOP_SL:
+ case R_LARCH_SOP_SR:
+ case R_LARCH_SOP_ADD:
+ case R_LARCH_SOP_AND:
+ case R_LARCH_SOP_IF_ELSE:
+ case R_LARCH_SOP_POP_32_S_10_5:
+ case R_LARCH_SOP_POP_32_U_10_12:
+ case R_LARCH_SOP_POP_32_S_10_12:
+ case R_LARCH_SOP_POP_32_S_10_16:
+ case R_LARCH_SOP_POP_32_S_10_16_S2:
+ case R_LARCH_SOP_POP_32_S_5_20:
+ case R_LARCH_SOP_POP_32_S_0_5_10_16_S2:
+ case R_LARCH_SOP_POP_32_S_0_10_10_16_S2:
+ case R_LARCH_SOP_POP_32_U:
+ case R_LARCH_ADD8:
+ case R_LARCH_ADD16:
+ case R_LARCH_ADD24:
+ case R_LARCH_ADD32:
+ case R_LARCH_ADD64:
+ case R_LARCH_SUB8:
+ case R_LARCH_SUB16:
+ case R_LARCH_SUB24:
+ case R_LARCH_SUB32:
+ case R_LARCH_SUB64:
+ case R_LARCH_GNU_VTINHERIT:
+ case R_LARCH_GNU_VTENTRY:
+ case R_LARCH_B16:
+ case R_LARCH_B21:
+ case R_LARCH_B26:
+ case R_LARCH_ABS_HI20:
+ case R_LARCH_ABS_LO12:
+ case R_LARCH_ABS64_LO20:
+ case R_LARCH_ABS64_HI12:
+ case R_LARCH_PCALA_HI20:
+ case R_LARCH_PCALA_LO12:
+ case R_LARCH_PCALA64_LO20:
+ case R_LARCH_PCALA64_HI12:
+ case R_LARCH_GOT_PC_HI20:
+ case R_LARCH_GOT_PC_LO12:
+ case R_LARCH_GOT64_PC_LO20:
+ case R_LARCH_GOT64_PC_HI12:
+ case R_LARCH_GOT64_HI20:
+ case R_LARCH_GOT64_LO12:
+ case R_LARCH_GOT64_LO20:
+ case R_LARCH_GOT64_HI12:
+ case R_LARCH_TLS_LE_HI20:
+ case R_LARCH_TLS_LE_LO12:
+ case R_LARCH_TLS_LE64_LO20:
+ case R_LARCH_TLS_LE64_HI12:
+ case R_LARCH_TLS_IE_PC_HI20:
+ case R_LARCH_TLS_IE_PC_LO12:
+ case R_LARCH_TLS_IE64_PC_LO20:
+ case R_LARCH_TLS_IE64_PC_HI12:
+ case R_LARCH_TLS_IE64_HI20:
+ case R_LARCH_TLS_IE64_LO12:
+ case R_LARCH_TLS_IE64_LO20:
+ case R_LARCH_TLS_IE64_HI12:
+ case R_LARCH_TLS_LD_PC_HI20:
+ case R_LARCH_TLS_LD64_HI20:
+ case R_LARCH_TLS_GD_PC_HI20:
+ case R_LARCH_TLS_GD64_HI20:
+ case R_LARCH_32_PCREL:
+ case R_LARCH_RELAX:
+ case R_LARCH_DELETE:
+ case R_LARCH_ALIGN:
+ case R_LARCH_PCREL20_S2:
+ case R_LARCH_CFA:
+ case R_LARCH_ADD6:
+ case R_LARCH_SUB6:
+ case R_LARCH_ADD_ULEB128:
+ case R_LARCH_SUB_ULEB128:
+ case R_LARCH_64_PCREL:
+ //
+ // These types are not used or do not require fixup in PE format files.
+ //
+ break;
+ default:
+ Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_LOONGARCH relocation 0x%x.", mInImageName, (unsigned) ELF64_R_TYPE(Rel->r_info));
+ }
+ } else {
+ Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine);
+ }
+ }
+ if (mEhdr->e_machine == EM_X86_64 && RelShdr->sh_info == mGOTShindex) {
+ //
+ // Tack relocations for GOT entries after other relocations for
+ // the section the GOT is in, as it's usually found at the end
+ // of the section. This is done in order to maintain Rva order
+ // of Coff relocations.
+ //
+ EmitGOTRelocations();
+ }
+ }
+ }
+ }
+
+ if (mEhdr->e_machine == EM_X86_64) {
+ //
+ // This is a safety net just in case the GOT is in a section
+ // with no other relocations and the first invocation of
+ // EmitGOTRelocations() above was skipped. This invocation
+ // does not maintain Rva order of Coff relocations.
+ // At present, with a single text section, all references to
+ // the GOT and the GOT itself reside in section .text, so
+ // if there's a GOT at all, the first invocation above
+ // is executed.
+ //
+ EmitGOTRelocations();
+ }
+ //
+ // Pad by adding empty entries.
+ //
+ while (mCoffOffset & (mCoffAlignment - 1)) {
+ CoffAddFixupEntry(0);
+ }
+
+ NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
+ Dir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
+ Dir->Size = mCoffOffset - mRelocOffset;
+ if (Dir->Size == 0) {
+ // If no relocations, null out the directory entry and don't add the .reloc section
+ Dir->VirtualAddress = 0;
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
+ } else {
+ Dir->VirtualAddress = mRelocOffset;
+ CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,
+ EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
+ | EFI_IMAGE_SCN_MEM_DISCARDABLE
+ | EFI_IMAGE_SCN_MEM_READ);
+ }
+}
+
+STATIC
+VOID
+WriteDebug64 (
+ VOID
+ )
+{
+ UINT32 Len;
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
+ EFI_IMAGE_DATA_DIRECTORY *DataDir;
+ EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *Dir;
+ EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;
+ EFI_IMAGE_DEBUG_EX_DLLCHARACTERISTICS_ENTRY *DllEntry;
+
+ Len = strlen(mInImageName) + 1;
+
+ NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
+ DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];
+ DataDir->VirtualAddress = mDebugOffset;
+ DataDir->Size = sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
+
+ Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);
+
+ if (mDllCharacteristicsEx != 0) {
+ DataDir->Size += sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
+
+ Dir->Type = EFI_IMAGE_DEBUG_TYPE_EX_DLLCHARACTERISTICS;
+ Dir->SizeOfData = sizeof (EFI_IMAGE_DEBUG_EX_DLLCHARACTERISTICS_ENTRY);
+ Dir->FileOffset = mDebugOffset + DataDir->Size +
+ sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +
+ DebugRvaAlign(Len);
+ Dir->RVA = Dir->FileOffset;
+
+ DllEntry = (VOID *)(mCoffFile + Dir->FileOffset);
+
+ DllEntry->DllCharacteristicsEx = mDllCharacteristicsEx;
+
+ Dir++;
+ }
+
+ Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;
+ Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;
+ Dir->RVA = mDebugOffset + DataDir->Size;
+ Dir->FileOffset = mDebugOffset + DataDir->Size;
+
+ Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);
+ Nb10->Signature = CODEVIEW_SIGNATURE_NB10;
+ strcpy ((char *)(Nb10 + 1), mInImageName);
+}
+
+STATIC
+VOID
+SetImageSize64 (
+ VOID
+ )
+{
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
+
+ //
+ // Set image size
+ //
+ NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = mCoffOffset;
+}
+
+STATIC
+VOID
+CleanUp64 (
+ VOID
+ )
+{
+ if (mCoffSectionsOffset != NULL) {
+ free (mCoffSectionsOffset);
+ }
+}
+
+STATIC
+VOID
+WriteExport64 (
+ VOID
+ )
+{
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
+ EFI_IMAGE_EXPORT_DIRECTORY *ExportDir;
+ EFI_IMAGE_DATA_DIRECTORY *DataDir;
+ UINT32 FileNameOffset;
+ UINT32 NameOffset;
+ UINT16 Index;
+ UINT8 *Tdata = NULL;
+
+ ExportDir = (EFI_IMAGE_EXPORT_DIRECTORY*)(mCoffFile + mExportOffset);
+ ExportDir->Characteristics = 0;
+ ExportDir->TimeDateStamp = 0;
+ ExportDir->MajorVersion = 0;
+ ExportDir->MinorVersion =0;
+ ExportDir->Name = 0;
+ ExportDir->NumberOfFunctions = mExportSymNum;
+ ExportDir->NumberOfNames = mExportSymNum;
+ ExportDir->Base = EFI_IMAGE_EXPORT_ORDINAL_BASE;
+ ExportDir->AddressOfFunctions = mExportOffset + sizeof(EFI_IMAGE_EXPORT_DIRECTORY);
+ ExportDir->AddressOfNames = ExportDir->AddressOfFunctions + EFI_IMAGE_EXPORT_ADDR_SIZE * mExportSymNum;
+ ExportDir->AddressOfNameOrdinals = ExportDir->AddressOfNames + EFI_IMAGE_EXPORT_ADDR_SIZE * mExportSymNum;
+
+ FileNameOffset = ExportDir->AddressOfNameOrdinals + EFI_IMAGE_EXPORT_ORDINAL_SIZE * mExportSymNum;
+ NameOffset = FileNameOffset + strlen(mInImageName) + 1;
+
+ // Write Input image Name RVA
+ ExportDir->Name = FileNameOffset;
+
+ // Write Input image Name
+ strcpy((char *)(mCoffFile + FileNameOffset), mInImageName);
+
+ for (Index = 0; Index < mExportSymNum; Index++) {
+ //
+ // Write Export Address Table
+ //
+ Tdata = mCoffFile + ExportDir->AddressOfFunctions + Index * EFI_IMAGE_EXPORT_ADDR_SIZE;
+ *(UINT32 *)Tdata = mExportRVA[Index];
+
+ //
+ // Write Export Name Pointer Table
+ //
+ Tdata = mCoffFile + ExportDir->AddressOfNames + Index * EFI_IMAGE_EXPORT_ADDR_SIZE;
+ *(UINT32 *)Tdata = NameOffset;
+
+ //
+ // Write Export Ordinal table
+ //
+ Tdata = mCoffFile + ExportDir->AddressOfNameOrdinals + Index * EFI_IMAGE_EXPORT_ORDINAL_SIZE;
+ *(UINT16 *)Tdata = Index;
+
+ //
+ // Write Export Name Table
+ //
+ strcpy((char *)(mCoffFile + NameOffset), mExportSymName[Index]);
+ NameOffset += strlen(mExportSymName[Index]) + 1;
+ }
+
+ NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
+ DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_EXPORT];
+ DataDir->VirtualAddress = mExportOffset;
+ DataDir->Size = mExportSize;
+
+}
+
generated by cgit v1.2.3 (git 2.39.0) at 2026-09-10 21:13:52 +0300